2x^2 - 16x + 32
Solution: x=4. This can be shown by factorisation or applying the quadratic formula.
NO
Related Maths GCSE answers
All answers ▸Factorise x^2 -7x+10, and hence solve x^2-7x+10=0
A rectangle has an area of 20 cm^2. Its length and width are enlarged by scale factor 3. Find the area of the enlarged rectangle.
Solve 3(x-2)=21
Lewis wins £360 in a prize draw. He gives 15% to charity and puts 3/8 into his savings. The rest he uses to buy a bike. How much of the money has Lewis got left for this bike? Note: do not use a calculator