Question

What is the positive solution to this equation? 4x^2+ 12x = 135 Record your answer and fill in the bubbles on your answer document.​

Answer 1

`(9)/(2) or 4.5`

Explanation:

4x^2+ 12x = 135

D=b²−4ac=122−4(4)(−135)=144+2160=2304=48²

`x_(p)= (-12+48)/(8) =(36)/(8)=(9)/(2)=4.5`