factorise - √7x²+9x+2√7
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Multiply. equation by minus sign
√7-9x-2√7=0
x={9±√(81+8×√7×√7)} / 2√7
x=9±√(81+56) / 2√7
x=9±√137 / 2√7 ans.
√7-9x-2√7=0
x={9±√(81+8×√7×√7)} / 2√7
x=9±√(81+56) / 2√7
x=9±√137 / 2√7 ans.
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