(pier10+2pier x)(7+4x)(pier7-2pier x)
1) = 6a+2b-8akwadrat+2ab
wiecej niewiem
a) (3a+b)^2-2a(4a-b)= 9a² + 6ab + b² - 8a² + 2ab = a² + 8ab + b²b) (2a+3b)^2-4a(a-2b)+(a+b)(a-9b) = 4a² + 12ab + 9b² - 4a² + 8ab + a² - 9ab + ab - 9b² = a²+ 12ab c) (x-1)^2+17-(x+2)^2+5(x-2) = x² - 2x + 1 + 17 - x² + 4x + 4 + 5x - 10 = 7x + 12
(pier10+2pier x)(7+4x)(pier7-2pier x) = (7√10 + 4x√10 + 14√x + 8x√x)(√7 - 2√x) = 7√70 - 14√10√x + 4x√70 - 8x√10√x + 14√7√x - 28x + 8x√7√x - 16x²
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1) = 6a+2b-8akwadrat+2ab
wiecej niewiem
a) (3a+b)^2-2a(4a-b)= 9a² + 6ab + b² - 8a² + 2ab = a² + 8ab + b²
b) (2a+3b)^2-4a(a-2b)+(a+b)(a-9b) = 4a² + 12ab + 9b² - 4a² + 8ab + a² - 9ab + ab - 9b² = a²+ 12ab
c) (x-1)^2+17-(x+2)^2+5(x-2) = x² - 2x + 1 + 17 - x² + 4x + 4 + 5x - 10 = 7x + 12
(pier10+2pier x)(7+4x)(pier7-2pier x) = (7√10 + 4x√10 + 14√x + 8x√x)(√7 - 2√x) = 7√70 - 14√10√x + 4x√70 - 8x√10√x + 14√7√x - 28x + 8x√7√x - 16x²