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Identity (x+y)(x-y)

Factorise x2+...

Question

Factorise x²+ 3√3x-30

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Solution

x²+3√3x-30
=x²+5√3x-2√3x-30
=x(x+5√3)-2√3(x+5√3)
=(x+5√3)(x-2√3)

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x²+3√3x+6

x^{2} + 3 \sqrt{3} x + 6

x^{2} + \frac{1}{x^{2}} + 2 - 3 x - \frac{3}{x} .

x^{2} + 3 \sqrt{3} x + 6 = 0

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