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Maths
GCSE

Solve: x^2 + x - 12 = 0

x2 + x - 12 = 0/ x2 + 4x - 3x - 12 = 0 (split x into two numbers which multiply to equal -12)/ x(x + 4) - 3(x + 4) = 0 (take out x and 3 respectively)/ (x + 4)(x - 3) = 0 (collect te...

Answered by Maximilian H. Maths tutor
3012 Views

There is a right angled triangle, you know the length of the hypotenuse (6) and one other side (3), can you calculate the third side of the triangle?

So it is easiest if we first draw out the triangle and label it.We use an equation called Pythagoras' Theorem. This equation is A^2 + B^2 = C^2So we know the length of side A (3) and side C (6), lets put ...

Answered by Oliver T. Maths tutor
2218 Views

How many centimeters are there in 6.8 meters?

6.8 = 680 centimetres 1 meter = 100 centimeters 6x100 = 6000.8 meters = 80 centimeters 600 + 80 = 680 centimeters

Answered by Arthur N. Maths tutor
3548 Views

How to find domains satisfying quadratic inequalities?

When you have a quadratic inequality the first step is to factorize it as if trying to solve a quadratic equation. If the equation is not easy to factorize, then complete the square or use the quadratic f...

Answered by Marianna M. Maths tutor
2267 Views

√ 5(√ 8 + √ 2) Can be written as "a√ 10". What is the value of a?

First expand the given expression √ 5(√ 8+√ 2) = √ 40 + √ 10 Now get it in the format where it has √ 10 in it. √ 40 + √ 10 = √ 4√ 10 + √ 1√ 10 and simplify this as you would in algebra by collecting like ...

Answered by Priya T. Maths tutor
2336 Views

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