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What should be added to `7x+5-8x^(2)`, so that the sum is `15x+9x-5`? |
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Answer» Correct Answer - `17 x^(2) + 8x - 10` Let f(x) be added to `7x +5-8x^(2)` to get `15x+9x^(2)-5` `:. f(x)=15x+9x^(2)-5-(7x+5-8x^(2))` `=15x+9x^(2)-5-7x-5+8x^(2)` `=(9x^(2)+8x^(2))+(15x-7x)+(-5-5)` `f(x)=17x^(2)+8x-10` `:.17x^(2)+8x-10` should be added to `7x+5-8x^(2)` to get `15x+9x^(2)-5` |
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