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Maths
GCSE

which expression is equivalent to x^2-4? (x-2)^2 (x-2)(x+2) (x+2)(x+2) x^2(-4)

(x-2)(x+2) because the x values cancel out leaving the integer and x^2 value.

BS
Answered by Bronte S. Maths tutor
4439 Views

How to make something the subject of the formula?

Make a the subject of the formula from : p = (3a + 5)/(4 - a)

When doing questions like these it is best to remember that if you multiply one side of the equation you have to do the same thing on t...

RC
Answered by Robin C. Maths tutor
5385 Views

Solve the following equation: 6x – 9 > 4x + 3

2x - 9 > 3, 2x > 12, x > 6

SM
Answered by Sean M. Maths tutor
5624 Views

How to solve how many sweets Hanna had?

This was a GCSE question in 2015. There are n sweets in a bag. 6 of them are orange, the rest are yellow. Hanna takes a random sweet from the bag and eats it. She then takes another random sweet and eats ...

CM
Answered by Callum M. Maths tutor
3952 Views

Expand and simplify (x-7)^2

  1. Write out the question fully like so: =(x-7)(x-7) 2. Expand the brackets using the FOIL method. i.e First Outer Inner Last or the Crab Claw Method You should get: = x^2 - 7x - 7x + 49 Be careful wit...
AC
Answered by Aisling C. Maths tutor
31778 Views

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