Recent content by SDAlgebra

This is not pre-uni topics, but i'd just like to know the answer thanks! 😊

I need help with how to use bar models with these kinda stuff. Thanks

My tip: BIMDAS! -4 squared is 16 as I have shown. And then open the brackets. (3)(16) - 3 + 5 3x16 = 48 -3+5 = 2 48 + 2 = 50 But yeah, as Ackbach said, a little 2 is a squared sign meaning to multiply it by itself.

Same 15 secs, give or take a few?

Would you use brackets in your test? In that case... You multiply each number in the brackets by the other brackets for example: [ (x+y)(x+y) ] would equal [ x2 + xy + xy + y2 ]. Simplifying these expressions would equal x2 + 2xy + y2 Or... As Skeeter said you combine the expressions from...