book Maths Puzzle Numerical Ability

Factor each of the following.
1) 4x2+7x-2
2) 16y2=25

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book Other Question

The sum of two numbers is 240.The larger number is 6 less than twice the smaller. find the numbers Jill has $3.50 in nickels and dimes. If she has 50 coins, how many of each type of coins does she have? I need to know an X and a Y. THANK YOU