What are the solutions of the equation x4 + 3x2 + 2 = 0? use u substitution to solve.

Asked by maham237 @ 24/12/2020 in Mathematics viewed by 344 People

Answered by maham237 @ 24/12/2020

We can use t=x^2 to solve this
Once we do that we will have simple square equation which we know how to solve.

t^2 + 3t + 2 = 0

t1 = -1
t2 = -2

x1 = √-1 = i
x2 = -i

x3 = √-2 = i√2
x4 = -i√2

Make sure you know that i^2 = -1 and (-i)^2 = -1 which gives us solutions we got...

What are the solutions of the equation 9x4 – 2x2 – 7 = 0? use u substitution to solve.

Asked by maham237 @ 02/12/2020 in Mathematics viewed by 449 persons

What are the solutions of the equation 9x4 – 2x2 – 7 = 0? Use u substitution to solve.x = + √7/9 and x = ±1 x = + √7/9 …

What are the solutions of the equation x4 – 5x2 – 14 = 0? use factoring to solve.

Asked by maham237 @ 23/12/2020 in Mathematics viewed by 414 persons

What are the solutions of the equation x4 + 95x2 – 500 = 0? use factoring to solve.

Asked by wiki @ 29/10/2020 in Mathematics viewed by 451 persons

What are the solutions of the equation x4 + 95x2 – 500 = 0? Use factoring to solve. x=+- sqrt 5 and x = ±10 x=+- sqrt i5 and x …

What substitution should be used to rewrite x8 – 3x4 + 2 = 0 as a quadratic equation?

Asked by maham237 @ 25/12/2020 in Mathematics viewed by 371 persons

What substitution should be used to rewrite 4x12 – 5x6 – 14 = 0 as a quadratic equation? u = x2 u = x3 u = x6 u = x12

Asked by maham237 @ 27/12/2020 in Mathematics viewed by 392 persons

Use graph to solve equation

Asked by maham237 @ 12/01/2021 in Mathematics viewed by 347 persons

Help me please! Explain how you can use the graph of the quadratic function f(x) to solve the equation f(x)=0

Solve the system of equations by substitution. what is the solution for x? 2x + y = 1 4x + 2y = −1

Asked by maham237 @ 01/12/2020 in Mathematics viewed by 416 persons

Solving equations using multiplication

Asked by maham237 @ 03/01/2021 in Mathematics viewed by 295 persons

How do you solve equations using multiplication and division

Which equation could be solved using the graph above

Asked by maham237 @ 22/12/2020 in Mathematics viewed by 322 persons

Which equation could be solved using the graph above?

Solve x 3 2 x 3 2 0 let u

Asked by maham237 @ 23/05/2021 in Mathematics viewed by 311 persons

Solve (x + 3)2 + (x + 3) – 2 = 0. Let u = Rewrite the equation in terms of u. (u2 + 3) + u – 2 = …

Which equation can be solved by using this system of equations?

Asked by maham237 @ 25/12/2020 in Mathematics viewed by 337 persons

Which equation can be solved by using this system of equations? y = 3x^3 - 7x^2 + 5 y = 7x^4 + 2x A.) 3x^3 - 7x^2 +5 = 0 …

Use synthetic division to solve (x4 – 1) ÷ (x – 1). what is the quotient?

Asked by maham237 @ 27/11/2020 in Mathematics viewed by 438 persons

Solve exponential equations using logarithms base 10 and base e

Asked by admin @ 29/10/2021 in Mathematics viewed by 307 persons

consider the equation 6*e^0.25t = 9 solve the equation for t. express the solution as a logarithm in base-e

Which equation could be used to solve for the measure of angle p?

Asked by maham237 @ 23/12/2020 in Mathematics viewed by 426 persons

Which equation could be used to solve for the measure of angle P? Circle N is shown with a quadrilateral OPQR inscribed inside it. Angle O is labeled x degrees. …

Solving quadratic equations by using the quadratic formula 9 5

Asked by admin @ 28/10/2021 in Mathematics viewed by 370 persons

Solve the following quadratic equation using the quadratic formula. 5x^2 − 8x + 5 = 0 Write the solutions in the following form, where r, s, and t are integers, …