Question

Tolong ya besok dikumpulin

Answer 1

1. 2x+3y-4x-5y = 2x-4x+3y-5y = -2x-2y
2. 9x2..... = 9x2 - 8x2 + 7x3 - 5x3 = x2 + 2x3
3. 7a(1+b) - 3b(1+a) = 7a+7ab-3b-3ab = 7a-3b+4ab
4. 3b-bx/cx-3c = b(3-x)-1/c(x-3) = -b/c
5. 3/x+1 + 3/x-1 = 3(x-1)/(x+1)(x-1) + 3(x+1)/(x+1)(x-1) = 3x-3+3x/(x+1)(x-1) = 9x/(x+1)(x-1) = 9x/x2-x+x-1 = 9x/x2-1


maaf klo krang jelas
maaf klo salah

Answer 2

1.= (2x-4x)+(3y-5y)
= -2x-2y
2.= (9x kuadrad-8x kuadrad)+(7x kubik-5x kubik)
= x kuadrad+2x kubik
3.
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6.