Wykonaj mnożenie,zredaguj wyrazy podobne.
a)(x+7)(2x-1)
b)(2a-1)(a+4)
c)4a-1)(2-3a)
d)(a do pot 5-1)(a+1)
e)X do pot 7-x do pot 5)(x to pot 3+x do pot2)
f)(2kdo pot 2-1)(2k+1)
g)(3-pdo pot 3)(p do pot2+1)
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a) (x+7)(2x-1)=2x2-x+14x-7=2x2+13x-7
b) (2a-1)(a+4)=2a2+8a-a+4=2a2+5a-2
c)(4a-1)(a+1)=8a-12a2-2-3a=-12a2+5a-2
a) 2x do pot 2- x +14x - 7=2x do pot 2 +13x - 7
b)2a do pot 2 +8a -a -4 = 2a do pot 2 +7a - 4
c)8a + 12a do pot 2 -2 +3a= 11a +12a do pot 2 -2
d)a do pot 6 + a do pot 5 - a - 1
e) x do pot 10 + x do pot 9 - x do pot 8 - x do pod 7 = x do pot 4
f) 2k do pot 3 + 2k do pot 2 - 2k - 1
g) 3p do pot 2 + 3 - p do pot 5 - p do pod 3