Question

(x-5)² expand using identities​

Answer 1

Answer:

(a-b)²= a²+ b²- 2ab

(x-5)²= x²+ 5²- 2(x)(5)

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Answer 2

SOLUTION

TO DETERMINE

Expand using identities :

$\sf {(x - 5)}^{2}$

CONCEPT TO BE IMPLEMENTED

We are aware of the formula that

$\sf {(a - b)}^{2} = {a}^{2} - 2ab + {b}^{2}$

EVALUATION

Here the given expression is

$\sf {(x - 5)}^{2}$

We now use the formula

$\boxed{ \: \: \sf {(a - b)}^{2} = {a}^{2} - 2ab + {b}^{2} \: \: }$

We have

$\sf {(x - 5)}^{2}$

$\sf = {x}^{2} - 2.x.5 + {5}^{2}$

$\sf = {x}^{2} - 10x + 25$

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