Question

1. Solve the following quadratic equations:
(x -1)^2= 9

Answer 1

Step-by-step explanation:

(x-1)²=9

x²-1=9

x²=10

x=3.16

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Answer 2

Answer:

(a-b)^2=a^2+b^2-2ab

so , x^2+1^2-2x1=9

x^2+1-2x=9

x^2-2x=9-1

x^2-2x=8

x^2-2x-8=0

x^2+2x-4x-8

x(x+2)-4(x+2)

(x-4),(x+2)

x=4,-2