exam Maths Puzzle Numerical Ability

If the sides of a square are increased by 3 in, the area is increased by 39 in. What were the dimensions of the original square?

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exam Other Question

x+3(divisor) divided by 5xcubed+5xsquared-32x-10 (dividend). Not sure how to work out this problem in long division. please help solve.

write the answer in both scientific notation and standard notation

2,500,000 x .00003 / .05 x 5,000,000