exam Maths Puzzle Numerical Ability

Simplify:
(7x^2+3x-9)-(-x^2+8x-3)

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exam Other Question

-3(4x+3)+4(6x+1)=43 Mr. Shelton plans on making the largest German underwater basket...in German. He needs 174 yds of material total to accomplish his fiendish plan. If he uses 2 yd. pieces and 3yd. p