How do I use the quadratic formula?
example quadratic eqn: ax2+bx+c=0 => x = (-b+-(b2-4ac)1/2)/2a e.g. 4x2-13x+3/4=0 x= (13+-(157)1/2)/8 = 3.1912, 0.0588
BB
Related Maths GCSE answers
All answers ▸Make x the subject of the formula: 3(2x-y)=ax-4
Sam is a bodybuilder. He currently weighs 90kg, but is aiming to be at 130kg in the next four months. Every month, he puts on 8% of his weight. Does he reach his target?
expand and simplify (x+7)(2x+4)
Simplify: 2x +6y +2y - x