Question 1
Simplify the following:
- $(a-2)^{2}-a(a+4)$
- $(5a-4b)(25a^{2}+20ab+16b^{2})$
- $(2m-3)(4m^{2}+9)(2m+3)$
- $(a+2b-c)(a+2b+c)$
Question 2
Factorise
- \(12x + 32y\)
- \(-12a + 24a^{3}\)
- \(6d -9r +2t^{5}d -3t^{5}r\)
- \(9z -18m +b^{3}z -2b^{3}m\)
- \(6j-15v+2yj-5yv\)
- \(16a-40k+2za-5zk\)