Question

(1)(x+5)(x+2) using appropriate identity ​

Answer 1

Answer: We know that the algebraic identity

[x+a] [x+b]=x² + ( a + b )x + ab

[x+5] [x+2]

=x² + ( 5 + 2 )x + 5 × 2

=x² + 7x + 10

Therefore [x+5] [x+2]=x² + 7x + 10