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Maths
GCSE

Solve (x+1)/3+(2x+5)/4=2

  1. Identify a common denominator4(x +1)/12 + 3(2x + 5)/12 (= 2)2. Expand both brackets(4x + 4)/12 + (6x +15)/12 = 23. Multiply out the denominator4+ 4 + 6...
MK
Answered by Modesta K. Maths tutor
4345 Views

How do you factorise quadratic equations by completing the square?

Divide the term in x by 2 and then put it in the bracket which will be squared. The last term from that expansion needs to be adjusted for.

DM
Answered by Dario M. Maths tutor
2860 Views

Expand: (3x-1)(x+5)(4x-3)

(3x^2+14x-5)(4x-3)= 12x^3-9x^2+56x^2-42x-20x+15=12x^3+47x^2-62x+15

WH
Answered by William H. Maths tutor
6950 Views

Tom has a circular garden of radius 30m and he wishes to cover it with fertiliser. Boxes of fertiliser cover 28m^2 of garden. How many boxes will Tom need to cover his entire garden?

Area of a Circle = πradius2 Area of Garden = π30*30 = 2827.43 m2Boxes needed = 2827.43/28 = 101

OR
Answered by Oliver R. Maths tutor
2450 Views

How do I find the coordinates of the turning point of the graph: y=3x^2-6x+7 ?

Our first step here is to differentiate the equation of the graph. To do this we will differentiate each of the three parts in the equation, as follows: To differentiate 3x^2, we first multpily the 3 in f...

JD
Answered by Joshua D. Maths tutor
5754 Views

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