Question

4. Extract the square root of the quadratic equation (X-5)2-25=0​

Answer 1

Answer:

x=7 or x=-3

EXPLANATION:

We can use identify,

(a²-b²)=(a+b) (a-b), as such

(x-2)²-25=0

(x-2)²-5²=0

or (x-2-5) (x-2+5)=0

or (x-7) (x+3) =0

i.e x=7 or x=-3

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