Question

Physics 1 determine value of (a-b)×(a+b)

Answer 1

Answer:

a^2 + b^2

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Step-by-step explanation:

(a-b)(a+b)

=a(a+b) + -b(a+b)

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

=a^2 + b^2

Answer 2

Step-by-step explanation:

(a-b)(a+b)

a(a+b) + -b(ab)

a^2+ab-ab-b^2

a^2-b^2