exam Maths Puzzle Numerical Ability

2, 4 Express this following rational expressions in lowest terms, please!

4x^2 - 12x - 40 OVER 2x^2 - 16x + 30

wow... need help! thanks.

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exam Other Question

The tens` digit of a two-digit number is 3 more than the units` digit. The number is 8 more than 6 times the sum of the digits.(85)(74)(52) or(41) I have 3 different problems that I am confused about. Please help me. The 1st one is2+3*5square root2-7. #2) (4/2)+4(5-2)square root 2. #3)-8-81/9*2square root 2+7. Can you pleas h