1. To square an expression means to multiply that expression by itself. So this is equal to (ax+b)(ax+b). Can you FOIL this expression?
2. Leave the 4 outside, and FOIL the two binomials. Give it a shot and let's see how you do.
Hi guys not sure how to approach these questions would appreciate being pointed in the right direction
Expand the following expressions, collecting together like terms where possible;
1. (ax + b) ^2
2. 4(x/2 - 3 ) (7y - x)
Thanks in advance
(don't use brackets for addition!)
Otherwise, it's fine. Be careful with how you set your work out, try and follow my example above for the second problem, and just be cautious where you put brackets (implying multiplication) and plus signs (obviously for addition).
4 (x/2 - 3) (7y - x)
= 4 (x/2.7y - x^2/2 - 21y - 3x)
Dont know whether to multiply everything in the brackets by the 4 outside or even if whats in the brackets is correct...help would be much appreciated