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Maths Puzzle
Numerical Ability
What is the sum of 4a to the 2nd -7a-5 and -6a to the 2nd -2a + 7
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book Other Question
find center and radius of this circle
x^2+y^2+6x-4y+5=0
5(X-7)squared = 135
My question is x = 7 + 3 square root of 3 or is the anwswer 10 square root of 3? Can I add 7 with 3 square root of 3?? HELP ME PLEASE!!!
Thank you.