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Science & Mathematics by Anonymous 2018-06-21 19:03:04
Social Science
What should be added to equation to make it a perfect square 9x^4 + 2x^2 + 25? ....Please!?
3 answers
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Anonymous
9x^4+2x^2+25+4x^2+(-24)= 9x^4+6x^2+1= (3x^2+1)^2 => Ans. add in (4x^2-24).
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Anonymous
There are several things you could add to make it a perfect square. Since you were given a few options, just try each one.
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Anonymous
If you add -224/9, then you get 9x^4 + 2x^2 + (1/9) which is equal to (3x^2 + (1/3))^2