a) 4x + 2 - 6 x + 4 + 7 x - 10 = dla x = - 2
b) 5 ( a - 3 ) - 3 ( 4 a + 2 ) = dla a = 1
Daje naj .. !!
a) 4x + 2 - 6 x + 4 + 7 x - 10 = 4x-2+2-6x-2+4+7x-10 = -8+2-(-12)+(-10)-10 = (-6)-(-2)-10 = (-4)-10 = -14
b) 5 x ( 1 - 3 ) - 3 x ( 4 x 1 + 2 ) = -10-18= (-28)
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a) 4x + 2 - 6 x + 4 + 7 x - 10 = 4x-2+2-6x-2+4+7x-10 = -8+2-(-12)+(-10)-10 = (-6)-(-2)-10 = (-4)-10 = -14
b) 5 x ( 1 - 3 ) - 3 x ( 4 x 1 + 2 ) = -10-18= (-28)