Question

Determine how many solutions the following equation has using quadratic formula x^2+5x=-8

Answer 1

I will be using differentiation method

Explanation:

x^2+5x =-8

2×x ×x^2-1 +5x = -8

2x +5x = -8

7x = -8

divide both sides by the co-efficient of x

7x÷7=-8÷7

x =-1.5