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  • When three times a number is added to the square of the same number, the result is 70. What is the number?

When three times a number is added to the square of the same number, the result is 70. What is the number?

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Let;the;number;be;x\*Now,\*Rightarrow 3x+x^2=70\*Rightarrow x^2+ 3x-70=0\*Rightarrow x^2+10x-7x-70=0\*Rightarrow x(x+10)-7(x+10)=0\* Rightarrow (x+10)(x-7)=0\*Rightarrow x=-10;or;x=7\*

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Deependra Verma

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