Question

4x²-7x-15=0 formula general​

Answer 1

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4ײ-7×-15=0

Fórmula=-b±√(b)²-4ac/2a

A=4

B=-7

C=-15

————————

×=-(-7)±√(-7)²-4(4)(-15)/2(4)

×=7±√49+240/8

×=7±√289/8

×=7±17/8

———————

×¹=7+17/8

×¹=24/8

×¹=3

———————

ײ=7-17/8

ײ=-10/8

ײ=-5/4

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