Question

2. 5x2 + 16x - 84 = 0
Helppp please

Answer 1

2.8, –6

Explanation:

The equation is already instandard form. Use the quadraticformula.5x2+16x−84=0x=−b±b2−4ac√2aSubstitute 5 for a, 16 for b,and −84 for c. Solve to getx=2. 8 or x=− 6.

Answer 2

the x would equal 25 as 5x2 is 10 + 16x25 - 84 is 0.

Explanation: