Toán Lớp 8: Tìm x a) x(x+5)- $x^{2}$ -3x= 6 b) $6^{2}$

a)x(x+5)- x^2 -3x= 6 x(x+5-x-3)=6 x.2=6 x=6/2 x=3 b) 6^2 - 7x+2= 0 36-7x+2=0 38-7x=0 7x=38 x=38/7

a) x(x+5)-x^2-3x=6 x^2+5x-x^2-3x=6 2x=6 x=3 b)6^2-7x+2=0 36-7x+2=0 38-7x=0 -7x=38 x=-38/7

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Toán Lớp 8: Tìm x a) x(x+5)- $x^{2}$ -3x= 6 b) $6^{2}$ – 7x+2= 0