Question

1 point 5) Solve by using the quadratic formula 8x² = 15 - 14x

Answer 1

I'll teach you how to solve 8x² = 15 - 14x

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8x² = 15 - 14x

Add 14x to both sides:

8x^2 +14x =15-14x+14x

Simplify:

8x^2 +14x =15

Subtract 15 from both sides:

8x^2+14x-15 = 15-15

SImplify:

8x^2+14x-15 = 0

Solve with the quadratic formula:

x= $\frac{-14+ \sqrt{14^2-4*8(1-15)} }{2*8}$  = 3/4

x= $\frac{-14+ \sqrt{14^2-4*8(1-15)} }{2*8}$  = -5/2

The solutions to the quadratic formula are:

x= 3/4, x=-5/2

Your Answer Is x= 3/4, x=-5/2

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