Q73 of 128 Page 224

State whether the statements are true (T) or false (F).
Factorisation of -3a²+3ab+3ac is 3a(-a–b –c).

Let us factorize -3a² + 3ab + 3ac.

-3a² + 3ab + 3ac = 3(-a×a + a×b + a×c)

⇒ -3a² + 3ab + 3ac = 3a (-a + b + c)

But, 3a (-a + b + c) ≠ 3a (-a – b – c)

Hence, the statement is false.

State whether the statements are true (T) or false (F).

Common factor of 11pq², 121p²q³, 1331p²q is 11p²q².

State whether the statements are true (T) or false (F).

Common factor of 12a²b²+4ab²-32 is 4.

State whether the statements are true (T) or false (F).

Factorised form of p²+30p+216 is (p+18) (p-12).

State whether the statements are true (T) or false (F).

The difference of the squares of two consecutive numbers is their sum.

State whether the statements are true (T) or false (F).Factorisation of -3a2+3ab+3ac is 3a(-a–b –c).