Answer: Stay healthy out there! (too many answers just to put here)
Step-by-step explanation:
1)
x^2 + x - 56 = 0
x^2 + 8x - 7x - 56 = 0
x(x+8)-7(x+8)
(x-7)(x+8)
x-7= 0
x = 7
x+8=0
x = - 8
2)
x = 7, -8
3)
7^2+7=56 (good)
-8^2-8 = 56 (good)
1)
x^2-11x+30=0
x^2-6x-5x+30
x(x-6)-5(x-6)
(x-5)(x-6)
(equal them to zero)
2)
x= 5, 6
3)
5^2-11(5)+30 = 0 (good)
6^2-11(6)+30 = 0 (good)
