Question

Factorise
1)xy(z^2 + 1) + z(x ^2 + y^ 2 )

Factorise using algebraic identities
1)m 2 – 10m – 56

Answer 1

Step-by-step explanation:

) LHS = (a + 4)(a + 2) = (a)2 + (4 + 2)(a) +

4 × 2 = a2 + 6a + 8 �j RHS

The correct statement is (a + 4)(a + 2)

= a2 + 6a + 8

(xv) LHS = (a – 4)(a – 2)

= a2 – (4 + 2)a + (–4 × –2)

= a2 – 6a + 8