Asked by marko
#27 can you check this:
-5x (x-4)
i got: -5x +20
#28 (y^2 - y -1) + (y^2 + Y + 3)
i got: 2y ^2 + 2
#29 (x^2 + 1) - (2x^2 + x -1)
i got: -x^2 - x +2
-5x (x-4)
i got: -5x +20
#28 (y^2 - y -1) + (y^2 + Y + 3)
i got: 2y ^2 + 2
#29 (x^2 + 1) - (2x^2 + x -1)
i got: -x^2 - x +2
Answers
Answered by
Bosnian
# 27
- 5 x ( x - 4 ) =
- 5 x * x - 5 x * ( - 4 ) =
- 5 x ^ 2 + 20 x =
20 x - 5 x ^ 2
# 28
Correct
# 29
Correct
- 5 x ( x - 4 ) =
- 5 x * x - 5 x * ( - 4 ) =
- 5 x ^ 2 + 20 x =
20 x - 5 x ^ 2
# 28
Correct
# 29
Correct
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