Question

Factorise Lgebric expression a²-(b-c)²?

Answer 1

Answer:

Explanation:

firs use the formula a^2-b^2=(a+b)(a-b)

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

second method first open whole square on b-c

=a^2-(b^2+c^2-2bc)

now open the parenthesis