Question

Solve the following quadratic equation
2x²+7x=15​

Answer 1

x = - 5 ; x = 3/2

Explanation:

Start by subtracting 15 from both sides to get to an equation in standard form: a x^2 + b x + c= 0 so we can use the quadratic formula to solve for "x".

2 x^2 + 7x - 15 = 0

Then:

`x=(-7+/-√(49-4(2)(-15)) )/(4) \\x=(-7+/-√(169) )/(4)\\x=(-7+/-13)/(4)\\x =-5\\or\\x=3/2`