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\(a,=3\left(x-5\right)-x\left(x-5\right)=\left(3-x\right)\left(x-5\right)\\ b,=7\left(x^2-2xy+y^2\right)=7\left(x-y\right)^2\\ c,=\left(x^2+y^2-2xy\right)\left(x^2+y^2+2xy\right)=\left(x-y\right)^2\left(x+y\right)^2\\ d,=\left(y^2-6y+9\right)-25x^2=\left(y-3\right)^2-25x^2=\left(y-5x-3\right)\left(y+5x-3\right)\)
a. \(2x^3-3x^2=x^2\left(2x-3\right)\)
b. \(3x^4-24x=3x\left(x^3-8\right)=3x\left(x-2\right)\left(x^2+2x+4\right)\)
c. \(x^3y+5x^2y=x^2y\left(x+5\right)\)
d. \(7x^2+14xy=7x\left(x+2y\right)\)
a)2x^3-3x^2=x^2(2x-3)
b)3x^4-24x
=3x(x^3-8x)
=3x(x-2)(x^2+2x+4)
c)x^3y+5x^2y
=x^2y(x+5)
d)7x^2+14xy
=7x(x+2y)
a) \(=2y^3\left(x^2-16\right)=2y^3\left(x-4\right)\left(x+4\right)\)
b) \(=7y\left(x^2-2x+1\right)=7y\left(x-1\right)^2\)
c) \(=2x^2\left(x+5y\right)-y\left(x+5y\right)=\left(x+5y\right)\left(2x^2-y\right)\)
a: \(2x^2y^3-32y^3=2y^3\left(x-4\right)\left(x+4\right)\)
b: \(7x^2y-14xy+7y=7y\left(x^2-2x+1\right)=7y\left(x-1\right)^2\)
7x2+15x-5=0
7*(x2+2.5x-5/7)=0
x2+2*x*1.25+1,5625-255/112=0
(x+1.25)2-255/112=0
a) ( x 2 – 4x + 1)( x 2 – 2x + 3).
b) ( x 2 + 5x – 1)( x 2 + x – 1).
\(7x^2-14xy\)
\(=7x\left(x-2y\right)\)
7x ^ 2 - 14xy
= 7x ^ 2 - 2 . 7xy
= 7x . ( x - 2y )