U have to common factor that add up to -5 but times to 4 so basically the answer would be (x+5)(x-1)= 0 then you would get x+5=0 x-1=0 both x’s are going to be different and have to equal to zero x=-5 x=1
for the other one u just have to get two number that multiply to -49 x^2=-49 u square root the -49 and get -7 but u have to have both a positive and negative for 7 so x=-7 x=7
