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Asked by maham237 @ in Mathematics viewed by 326 People
Select all of the following that are quadratic equations. 3x 2 + 5x - 7 = 0 x 3 - 2x 2 + 1 = 0 2x - 1 = 0 5x 2+ 15x = 0 6x - 1 = 4x + 7 x 2 - 4x = 4x + 7
Answered by maham237 @
a) 3x 2 + 5x - 7 = 0
b) x 3 - 2x 2 + 1 = 0
c) 2x - 1 = 0
d) 5x 2+ 15x = 0
e) 6x - 1 = 4x + 7
f) x 2 - 4x = 4x + 7
a) d) and f) are quadratic equations
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