Answers>Maths>GCSE>Article

Expand completely: (3a-6)(a+3)

Final Answer: a2 +3a -18 Using FOIL (First, outside, inside, last) we multiply the terms in the brackets together. First: 3a multiplied by a = 3a2  Outside: 3a x 3 = 9a Inside: -6 x a= -6a Last: -6 x 3 = -18 Combine these terms to get your final answer: 3a2+9a-6a-18= 3a2+3a-18

SS

Related Maths GCSE answers

All answers ▸

Expand the following : (2x+3)(x-1)

Samuel S. avatarAnswered by Samuel S.

How do I find the gradient of a line?

Jacob B. avatarAnswered by Jacob B.

For all values of x f(x) = x^2 + 2 g(x)= x - 5 show that fg(x) = x^2 -10x +27

Yasmin S. avatarAnswered by Yasmin S.

If f(x)=8x-3, what is the inverse function?

Teresa A. avatarAnswered by Teresa A.