Question

4) Solve the following quadratic equation by factorization method.
x² + x - 20=0
find the prohobility of the following yen​

Answer 1

Step-by-step explanation:

x² + x - 20=0

x²-5x+4x-20= 0

x(x-5)+4(x-5)

(x+4)(x-5)

x= 5 or -4