Question

Would like some help

Answer 1

A

Explanation:

-4x²+7x+8=0

4x²-7x-8=0

a = 4, b = -7, c = - 8

x= (−b ± √b²−4ac) ÷ 2a

x= [ −(−7) ± √(−7)²−4(4)(−8) ] ÷ 2(4)

x = 7±√177

Hence,

x = 7+√177 and x = 7-√177

It has two solutions