exam Maths Puzzle Numerical Ability

Hi

I need some help on my homework which i am finding difficulty of doing. The question is

Q1. Not everyone has the same pulse rate - and pulse rate can be affected by a

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exam Other Question

Factor Completely:

ax-bx+5a-5b

6x(2)-26x-20 This shoul read 6x squared

25x2-40+16 This should read 25x squared

x4-3x2-4 This should read x t the 4th adnd 3x squared can you help me with this problem? it is... the perimeter of a rectangle is 160ft. one fourth the length is the same as twice the width. find the dimension of the rectangle.