अभिव्यक्तियों को सरल बनाएं और निर्देशानुसार उनका मूल्यांकन करें: (i) x(x-3)+2 for x=1(ii)3y(2y-7)-3(y-4)-...

(i) x^(2) - 4x + 3 = 0 (ii) y^(2) - 7y+10 = 0

Simplify the expressions and evaluate them as directed: ( i ) x(x-3)+2 for x=1 (ii) 3y(2y-7)-3(y-4)-63 for y=2

Simplify: (3x+2y)(4x+3y)-(2x-y)(7x-3y)

Multiply (i) (x-4) and (2x+3) (ii) (x-y) and (3x+5y)

(i) 2x+3y=4;3x-y=-5

Evaluate: (2x+3y)^(2)( ii) (2x-3y)^(2)(2x+3y)2x-3y)

Find x and y if: (i) (x + 1,y-2) = (3,1) (ii) (x + 2,4)= (5,2x+y)

{:(3x + 2y = 4),(2x - 3y = 7):}

(6)/(x+y)=(7)/(x-y)+3(1)/(2(x+y))=(1)/(3(x-y))

Simplify: (2x+3y)(3x4y)-(7x+3y)(x+2y)