Question

ayudaaaaaaaaaa doy CORONITA
7.- 3x (x-1) -2y (x-1) +z (x-1)

8.- 3ax -2by -2bx -6a +3ay +4b

9.- 20ax -5bx -2by +8ay

10.- 1-y2

11.- 4x2 -81y4

12.- 25x2y4 -121

13.- a2b8 -c
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Answer 1

Respuesta:

Explicación paso a paso:

$7)3x\left(x-1\right)-2y\left(x-1\right)+z\left(x-1\right)\\\\3x^2-3x-2y\left(x-1\right)+z\left(x-1\right)\\\\3x^2-3x-2xy+2y+z\left(x-1\right)\\\\3x^2-3x-2xy+2y+xz-z$

$8)3ax-2by-2bx-6a+3ay+4b\\\\3ax-2by-2bx-2\cdot \:3a+3ay+4b\\\\3a\left(x-2+y\right)-2by-2bx+4b\\\\3a\left(-2+x+y\right)-2by-2bx+2\cdot \:2b\\\\3a\left(-2+x+y\right)+2b\left(-y-x+2\right)\\\\3\left(-2+x+y\right)a-2\left(-2+x+y\right)b\\\\\left(-2+x+y\right)\left(3a-2b\right)$

$9)20ax-5bx-2by+8ay\\\\5x\left(4a-b\right)+2y\left(-b+4a\right)\\\\\left(-b+4a\right)\left(5x+2y\right)$

$10)1-y^2\\\\1^2-y^2\\\\\left(1+y\right)\left(1-y\right)$

$11)4x^2-81y^4\\\\\left(2x\right)^2-\left(9y^2\right)^2\\\\\left(2x+9y^2\right)\left(2x-9y^2\right)$

$12)25x^2y^4-121\\\\\left(5xy^2\right)^2-11^2\\\\\left(5xy^2+11\right)\left(5xy^2-11\right)$

$13)a^2b^8-c\\\\a^2b^8-c$

no se puede simplificar mas