I'm struggling with quadratic equations

Quadratic equations can be tricky, to begin with, but once you get the hang of them they can become one of the best maths tools on offer to you. All quadratic equations with real roots can be solved with the quadratic formula. The quadratic formula is as follows: x=(-b±sqrt(b-4ac))/2a.

a is representative of the coefficient of the x- that is , the number before the x , b is the number before the x and c the final value at the end of your equation.

BW

Related Maths GCSE answers

All answers ▸

What does it mean to solve an equation for x?


Factorise f(x) = 6x^3 -7x^2 -x +2 = 0


y is inversely proportional to d^2 and when d = 10, y = 4. d is directly proportional to x^2 and when x = 2, d = 24. Find a formula for y in terms of x. Give your answer in its simplest form.


Renee buys 5 kg of sweets to sell. She pays £10 for the sweets. Renee puts all the sweets into bags. She puts 250 g of sweets into each bag. She sells each bag of sweets for 65p. Renee sells all the bags of sweets. Work out her percentage profit.