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Factorise and solve: x^2 - 8x = -15

Step 1 : The first step is to rewrite the equation in the form a x 2 + b x + c = 0. So in this case, we achieve this by adding 15 to both sides: x 2 - 8x + 15 = -15 + 15 x 2 - 8x + 15 = 0 Step 2: Now we need...
MJ
Answered by Maisie J. • Maths tutor
7846 Views

factorise fully- 8y + 4y2

First of all you need to separate the two numbers you have 8Y and 4y2 then ask yourself what you can divide both these 2 numbers with? so 4 can be divided by 4 and 8 can be divided by 4. so we can divide bot...
LL
Answered by Logan L. • Maths tutor
8903 Views

Find the possible values of x for x^2 = 36-5x.

While this question may appear unfamiliar at first, it is just a quadratic equation in disguise. Rearranging such that it equals 0: x^2 + 5x - 36 = 0 Now this equation is ready to be solved! We can approach ...
BH
Answered by Ben H. • Maths tutor
10018 Views

How do I simplify fully (p^3 x p^4)/p^2?

At first this looks quite daunting as it combines a number of different indices (powers) and a fraction. The rules for indices are just something that you have to learn - so don't worry if you don't know the...
ER
Answered by Emily R. • Maths tutor
15040 Views

Solve X^2 +13X+48=12

It is first important to get the equation to equal 0, so to do this you minus 12 from each side of the equals symbol, giving youX^2 +13X+36=0Now it is time to think about factorising!The best trick for this ...
KM
Answered by Kemba M. • Maths tutor
6631 Views