exam
Maths Puzzle
Numerical Ability
find the distance between (-3,-2) and (1,4)
a 27
b 2 square root 5
c 2 square root 13
d square root 10
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exam Other Question
The width of a rectangle is decreased by 20%. By what percent would the length have to be increased for the area to remain the same?
I need to simplify 6.7x(3x-2y)+1.2(x^2-y^2)
Heres what I have completed 20.1x^2-13.4xy+1.2x^2-1.2y^2 = 21.3x^2-1.2y^2-13.4xy