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Maths
GCSE

Solve the following equation: x^2- x - 12 = 0

When looking at this equation, we need to think of two numbers that multiply together to give 12 and have a difference of one. We can rewrite the equation as the following: (x-4)(x+3) = 0 Solving for x:Th...

Answered by Daniel L. Maths tutor
2161 Views

3/(x-1) - 2/(x+1) = 1 Solve to find the values of x.

3(x+1) - 2(x-1) = 1(x-1)(x+1)3x + 3 - 2x + 2 = x2 - 1x2 - x - 6 = 0(x - 3)(x + 2) = 0x = 3 x = -2

Answered by Ece B. Maths tutor
2163 Views

You are given two equations: 3y-2x=11 and y+x=12. By solving simultaneously, what is the value of x and the value of y.

Begin by setting up the equations simultaneously. To make it easier we can label the equations (1) and (2)3y-2x=11 (1)y+x=12 (2)We then need to make the values of y or the values of x equal in both equati...

Answered by Natasha F. Maths tutor
2563 Views

Where does the quadratic formula come from?

The quadratic formula is used to find the roots of a quadratic equation which comes in this form:

y = ax2 + bx + c

By finding the roots, we mean that we find the values of...

Answered by Rebecca R. Maths tutor
2188 Views

Solve the equation p + 15 = 2(4p − 3)

Expand brackets: 8p-6. Move all values to one side: p - 8p + 15 + 6 = 0. Subtract p values and add normal numbers: -7p + 21 = 0. Move p values to other side: 21 = 7p. Divide through by 7: p = 21/7. p = 3....

Answered by Luke M. Maths tutor
4423 Views

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