Factorisation By Extracting Common Factors

Factorise completely -35f + 7.

• 7(-5f + 1)

• 7(-5f - 1)

• 5(-7f + 7)

• 7(-5f + 7)

Is -28cw-8wu = -4w(7c - 2u)?

• True
• False

Factorise completely 2qp - 15pqr + 3rqp.

• q(2p - 15pr + 3rp)

• p(2q - 15qr + 3rq)

• pq(2 - 15r + 3r)

• 3pq(2 - 5r + r)

Factorise completely 3(x + y) - a(x + y).

Factorise completely 5ax - 15bx - 30x.

Fill in the missing blank.

(5m - 4) + b(5m - 4) = (_____)(1 + b)

Factorisation is the _______ process of expansion.

Factorise completely 36x - 12xy.

• 12(3x - xy)

• 12x(3 - y)

• x(36 - 12y)

• 3x(12 - 4xy)

Fill in the missing blank.

12nx + 18mx = 6x(_______)

Is 7bt - 21b - 35bt = -7b(3 + 4t)?

• No

• Yes