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2 + 3 + 7 = 12
6000/12 = 500
7 x 500 = 3500
(3/5) x (3500) = 2100
2100 + 2(500) = 2100 + 1000 = 3100
(3100/6000) x 100 = 52%.
(m+3)(m+10)
m2 + 3m+ 10m + 30
m2 +13m+ 30
(2x+9)2 = (2x+9)(2x+9) Use FOIL to expand these brackets: First - (2x+9)(2x+9) --> 4x2 Outside - (2x+9)(2x+9) --> 4x2 + 18x Inside - (2x<...
Firstly we need to get all the x's on one side and the numbers on the other side. So if we add 2 to both sides we get 5x > 3x + 13. Now as we want the x's on the right hand side, we need to subtract bo...
Supposing we have two equations x+2y=5 and 3x-y=10 and we want to find x and y we can use the following techinque. Multiply both the RHS and the LHS of the second equation by 2, giving us 6x-2y=20. Then a...
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