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Fully expand (2x+4)(4x-3).

Answer: 8x 2 +10x-12 Explanation: It is really important that every 'term' is multiplied by every other 'term'. A 'term' doens't just refer to the number but also to the sign in front of it i.e. the terms in...
MH
Answered by Matilda H. • Maths tutor
4167 Views

How can I apply trigonometry rules to an isosceles triangle?

First, split the isosceles triangle down the middle to create a right angled triangle. Then label the opposite, hypotenuse and adjacent. The hypotenuse will be the longest side of the triangle, the opposite ...
GW
Answered by Gwen W. • Maths tutor
35335 Views

factorise the quadratic: v^2+20v+19

Recap defintions: factorise essentially means making the equation simpler by finding the common factors. This is a simple quadratic because the first term has a coeffecient of 1. therefore we know it will fa...
TL
Answered by Taylor L. • Maths tutor
4278 Views

Solve the simultaneous equations: 3x+7y=18 and x+2y=5

To help us to see what we need to do in this question, I would always line the equations up one above the other, and label them (1) and (2). Here we'll say that (1) is 3x + 7y =18 and (2) is x+ 2y =5 - To so...
HC
Answered by Harriet C. • Maths tutor
7588 Views

what is x+24=15

x+24-24=15-24 x=15-24=-9
RW
Answered by Ruyuan W. • Maths tutor
5841 Views