expand and simplify 4(a+2b) + 2(b-5a) ??

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expand and simplify 4(a+2b) + 2(b-5a) ??

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2007-03-08 07:41:11 · 4 answers · asked by Anonymous in Education & Reference ➔ Homework Help

4 answers

multiply out the brackets:

4a + 8b + 2b - 10a

simplify

-6a +10b

re-arrange

10b-6a
there you go

2007-03-08 07:44:29 · answer #1 · answered by Anonymous · 1⤊ 0⤋

((4 X a) + (4 X 2b)) + ((2Xb) + (2 X -5a))

= 4a + 8b + 2b - 10a

= 10b - 6a

Hope it helps !

2007-03-08 07:50:45 · answer #2 · answered by PH 2 · 0⤊ 0⤋

4a + 8b + 2b - 10a
-6a + 10b

2007-03-08 07:53:01 · answer #3 · answered by Anonymous · 0⤊ 0⤋

4a + 8b + 2b -10a.

Therefore

4a + 10b - 10a

Finally to

10b - 6a.

But WHY oh WHY do maths students never say please - they are the most arrogant of all questioners

2007-03-08 07:47:38 · answer #4 · answered by spiegy2000 6 · 0⤊ 0⤋