Simplify and then solve by factorisation 3x(x+2)-7=2, to find x.
3x(x+2)-7=2 3x2+6x-7=2 3x2+6x-9=0 3(x2+2x-3)=0 [Divide by 3] (x2+2x-3)=0 (x+3)(x-1)=0 x= -3 x=1
IM
Related Maths GCSE answers
All answers ▸Solve 3x^2 = 8x - 2 giving your answers to 2 d.p.
5 pencils cost 50p , how many would 2 pencils cost?
Solve the quadratic equation (x^2)-x-12=0 (easy), (x^2)-9=0 (special case), (x^2)+5x-13=0 (quadratic formula)
Solve this set of linear equation to find x and y: 1. 8x + 2y =48 2. 7x +3y =47