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Explaining how to solve simultaneous equations

Solving simultaneous allows us to determine the value of two variables from two equations. 2x+y = 133x+2y = 21 To find the value of the variables, our first step is to choose a variable and have equal number...
DC
Answered by Daniel C. • Maths tutor
4076 Views

161/5 x 26x =

16 1/5 x 2 x =8 2/3 work out x
KT
Answered by Kristin T. • Maths tutor
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Expand and simplify (x − 4)(2x + 3y)^2

First concentrate on expanding the squared term, don't try and do it all in your head, the 2x+3y term should expand to give 4 separate terms. Then combine any terms with the same configuration of x and y, in...
CM
Answered by Catherine M. • Maths tutor
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What are the two roots of the equation (4x-8)(x-3) = 0?

Since there are two terms multiplying together, when either of them are equal to zero, the total multiplication will also be zero. Ie, 10 x 0 = 0. This means that to find the two roots, we can simply equate ...
DD
Answered by Daniel D. • Maths tutor
4118 Views

Solve 3x + 6 > 3 - 2x.

3x + 6 > 3 - 2x. Firstly move the numerical terms to one side. 3x + 3 > - 2x. Secondly, move all x terms to the same side. 5x + 3 > 0. Finally, put the numerical and x terms to opposite sides, and d...
DD
Answered by Daniel D. • Maths tutor
3736 Views