exam Maths Puzzle Numerical Ability

Simplify and combine like radicals

√ 12 - √ 75

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exam Other Question

if four congruent circles are insicribed in a sqaure qith the side length of 20mm what is the peremiter of the shaded portion of the square? ok for the top of question 23 in chap 7 on pg 494 i left the 6x2 as is. for the bottom part i foiled it out. orignal: x2+2x-35 so i (x+7)(x-5)then there is the division sign then f