SOLUTION: (-3r2 – 4r) + (2r2 + r – 1)
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Question 504361
:
(-3r2 – 4r) + (2r2 + r – 1)
Answer by
Maths68(1474)
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(-3r2 – 4r) + (2r2 + r – 1)
=(-3r2 – 4r) + (2r2 + r – 1)
=(-6r-4r)+(4r+r-1)
=(-10r)+(5r-1)
=-10r+5r-1
=-5r-1
