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BIDMAS

When solving a maths problem you can't just do it in any order. 'BIDMAS' is a way to remember what order to solve in. It stands for: B rackets I ndices D ivision M ultiplication A ddition S ubtractionFor exa...
AH
Answered by Anna H. • Maths tutor
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If the two shorter lengths of the triangle have sizes 4cm and 3cm, what is the length of the longest side?

5 cm
DS
Answered by Diana S. • Maths tutor
2934 Views

Integrate xsin(x) with respect to x

For this use integration by parts, letting the integral = T. Let u = x and dv/dx = sin(x). Differentiating u with respect to x gives du/dx = 1. Integrating dv/dx with respect to x gives v = - cos(x). Now, us...
EM
Answered by Ethan M. • Maths tutor
3392 Views

Solve: x^2 – x – 12 = 0

Method 1: Solve by inspection. Demonstrate that quadratic equations can often be written in the form (x+a)(a+b) = 0. Explain that possible solutions arise as a result of either (x+a) or (x+b) =0. Note that a...
NA
Answered by Nikesh A. • Maths tutor
3373 Views

How many real solutions does x²=-36 have?

There are no real answers for this equation.This is because you would have to square root a negative number to solve the equation and that is a mathmatic impossibility.
HC
Answered by Harry C. • Maths tutor
2653 Views