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How can algebraic expressions be simplified?

In algebra, long expressions can be simplified which makes them easier to solve. We can simplify alebraic expressions by collecting together "like terms". When looking at an expressions such as: 5x...
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Answered by Fraser M. • Maths tutor
12665 Views

When would I use the quadratic formula?

You would use the quadratic formula when trying to find the value of a variable such as x in a quadratic equation but it can not be successfully factorised with whole numbers. Treating the the equation in th...
EO
Answered by Emily O. • Maths tutor
5395 Views

How Would I Factorise A Quadratic Equation?

Factorising is a way of 'converting' an equation into a form with brackets in order to make it more useful and easier to manipulate. It is the reverse of expanding an equation. For example: To factorise the ...
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Answered by Cameron G. • Maths tutor
4874 Views

How to expand brackets?

Expand 5( x - 4) To expand the brackets, you must mutilpy the number outside the bracket by everything inside. Step 1) 5 x x = 5 x Step 2) 5 x (-4) = -20 Remember to include the minus sign Adding the answers...
AC
Answered by Andy C. • Maths tutor
16299 Views

How to find the roots of a Quadratic Equation by Factorising?

Suppose you have a quadratic equation: x 2 + 5x + 6 You are told it has TWO REAL ROOTS and you are to find them. The factorised quadratic with two roots will look like this: (x+ a )(x+ b ) Where a and b are ...
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Answered by Joshua F. • Maths tutor
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