Question

factorize x^2+4x-7 ​

Answer 1

Answer:

x = -2+√11 , -2-√11

Step by step verification

substitute a=1, b=4 , c= -7 in

formula x= [-b ± √(b^2 - 4ac) ] / 2a

x = [-4±√(4^2 - 4(1) (-7) ) ] /2(1)

x = [-4±√16+28]/2

x = [-4±√44]/2

x = 2 [-2±√11]/2

x = -2±√11