Rozłóz na czynnik:
a) 5a + 10a do pot.3
b) 3a do pot.3 + 6ab - 9a
C) a (x+y) - 3(x+y) -(bx+by)
d) x do pot.2 + xy + ax + ay
e) a do pot. 2 - 4
f) 9-x do pot.2 + 2xy - y do pot.2
g) x do pot2 - 3xy +2y do pot 2
h) x do pot 2 + 8 xy + 15 y do pot 2
i) 2 + x do pot 3 - 8 y do pot 3
DO POT ZNACZY DO POTĘGI 2 ALBO 3 ITD NIE WIEM JAK SIE ROBI SYMBOL POTEGI ;P
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a) 5a(1+2a²)
b) 3a(a²+2b-3)
c) (x+y)(a-3-b)
d) x(x+y) + a(x+y) = (x+y)(x+a)
e) (a-2)(a+2)
f) 9 - (x² -2xy +y²) = 9 - (x - y)² = ( 3 - x + y)(3 + x - y)
g) x² - xy - 2xy + 2y² = x( x-y) -2y(x-y) = (x-y)(x-2y)
h) x² + 3xy + 5xy + 15y² = x(x+3y) +5y(x+3y) = (x+3y)(x+5y)
i) 2+ (x-2y)(x²+2xy+4y²)