Answers>Maths>GCSE>Article

Solve y = x^2 + 3x + 2 = 0

Factorising gives: y = (x+2)(x+1) = 0. y only equals 0 when (x+2)=0 or (x+1)=0. Therefore x=-2 or x=-1

SL

Answered by Sean L. • Maths tutor

3246 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Simplify (3x^2 + x -2)/(x^2 - 1)

a)By completing the square, prove the quadratic formula starting from ax^2+bx+c=0, b) hence, or otherwise solve 3x^2 + 7x -2= 9, to 3s.f.

Solve the equation x^3-5x^2+7x-3=0

Work out 5/6 + 3/7. Give your answer as a mixed number.