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Maths
GCSE

Solve x^2 – 6x – 8 = 0 Write your answer in the form a ± √ b where a and b are integers. (Higher tier paper)

To solve this equation we cant use the PSF method, as nothing multiplies to -8 and adds to -6. (Also in the question it says the answer will be in a±b which is normally what you get when you can't factori...

Answered by Alex D. Maths tutor
17370 Views

Solve the simultaneous equations 2x - y = 13, x - 2y = 11

  1. In order to solve simultaneous equations, you need to make either terms of x (i.e. '2x') or terms of y (i.e. 'y') in equation (1) and equation (2) equal. To do this, multiply either (1) or (2) as sh...
Answered by Graciella M. Maths tutor
16342 Views

FInd the values of x for the following equation holds: x^2-5x+6=0

  1. Factorise

(x-3)(x-2) =0

Therefore  x-3=0, x=3. Also x-2=0, x=2.

Answered by Nelson T. Maths tutor
2633 Views

How do you convert a recurring decimal in to a fraction?

Find 3.6262 (recurring) as a fraction s=3.626262 (recurring) 100s= 362.626262 99s= 100s - s 99s=359 s=359/99

Answered by Sidhant S. Maths tutor
3019 Views

Work Out (2+11/15 )-(1+1/3)

= (30/15+11/15) - (3/3+1/3) = (41/15)-(4/3) = (41/15)-(20/15) = (21/15) = (7/5)

Answered by Jack C. Maths tutor
2548 Views

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