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निम्नलिखित समीकरणों में प्रत्येक के चार ...

निम्नलिखित समीकरणों में प्रत्येक के चार हल लिखे। (i) x+2y=6 (ii) 2x+y=7 (iii) pix+y=9 | 9 | दो ...

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(i) x^(2)+9x+20=0 (ii) y^(2)+7y+12=0

x+2y=9 2x+4y=7

I. 20x^(2) - x - 12 = 0 II. 20y^(2) + 27y + 9 = 0

I. x^(2) - 10x+24 = 0 II. y^(2) - 9y + 20 = 0

(i) 2x^(3) = sqrt(256) II. y^(2) -9y+14 = 0

(x)/(2) - ( y )/(9) = 6, ( x) /( 7) + ( y ) /(3) = 5 .

x=2,y=-9 or x=-2,y=-9