Math, asked by chisomjoy082, 1 year ago

X×x-x=72
X+x×x=45
X÷x=6
X÷✓x-x=???

Answers

Answered by elinapati1981

Answer:

$(i)x×x-x=72\\ \Rightarrow x^{2}-x=72\\ \Rightarrow x^{2}-x-72=0\\ \Rightarrow x^{2}-9x+8x-72=0\\ \Rightarrow x(x-9)+8(x-9)=0\\ \Rightarrow (x-9)(x+8)=0\\ \Rightarrow x=9\: or -8\\ \\ (ii)x+x×x=45\\ \Rightarrow x+x^{2}=45\\ \Rightarrow x^{2}+x-45=0\\ \Rightarrow x=\frac{-1\pm\sqrt{1^{2}-4×1×(-45)}}{2}\\ \Rightarrow x=\frac{-1\pm\sqrt{181}}{2}\\ \\ (iii)\frac{x^{2}}{x}=6\\ \Rightarrow x^{2}=6x\\ \Rightarrow x^{2}-6x=0\\ \Rightarrow x(x-6)=0\\ \Rightarrow x=0\: or\: 6$

Answered by Anonymous

Step-by-step explanation:

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X×x-x=72 X+x×x=45 X÷x=6 X÷✓x-x=???

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X×x-x=72
X+x×x=45
X÷x=6
X÷✓x-x=???