Question

if a = -5 b= 2 calculate (b-a) (b+a)​

Answer 1

Answer:

- 21

Step-by-step explanation:

$(b - a)(b + a)$

$= {b}^{2} - {a}^{2}$

Substituting a = -5, b = 2,

$= {(2)}^{2} - {( - 5)}^{2}$

$= 4 - 25$

$= - 21$

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Answer 2

Answer:

The answer is above.hope it is helpful.