How do you expand brackets in a quadratic equation?
To expand the brackets in a quadtratic equation you should multiply whatever is outside the bracket by that which is inside the bracket. For example: 2(x+3) First multiply the first part of the bracket with whatever is outside the bracket: 2x Then multiply the second part of the bracket with whatever is outside the bracket: +6 = 2x +6
DH
Related Maths GCSE answers
All answers ▸Talil is going to make some concrete mix. He needs to mix cement, sand and gravel (1: 3:5) by weight. Talil wants to make 180 kg of concrete mix. He has 15 kg of cement, 85 kg of sand, 100 kg of gravel. Does he have enough to make the concrete?
How would you solve a simultaneous equation?
Find the minimum value of the quadratic equation: y = x^2 + 4x - 12
Solve the following simultaneous equations: (1) 3x – 2y = 7 (2) 5x + 2y = 17