exam Maths Puzzle Numerical Ability

Simplify:

3 sq root 32 - 5 sq root 50 - 8 sq root 45 + 7 sq root 20

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exam Other Question

Hlp please
-5/3x+2>_5/x

thanks 4 ur time solve. approximate irrational roots to the nearest tenth.

The length of a rectangle is 3 cm greater than its width. The area of the rectangle is 180 cm^2. find the length and width. (units optional)