Answer:
3200
Step-by-step explanation:
area= (l*b)
area=(160*20)
area=3200
Answer:
10x²+11-2x
Step-by-step explanation:
I hope you mean 7x²+8+5, not 7x²+8x+5.
We need to combine like terms. Anything with squared should be added together, et cetera.
(7x²+8+5)+(3x²-2x-2)
You can take out the parenthesis, because they don't matter in addition.
7x²+8+5+3x²-2x-2
Add the terms, step by step. Each bold pair needs to be added together.
7x²+8+5+3x²-2x-2
10x²+8+5-2x-2
10x²+11-2x
Now there's no more we can add together.
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We Need To Remember Order of Operations.
So, We Do:
4+5.
We Know That 4 + 5 = 9, So We Have:
9 <span>÷ 3 * 4
Now, We Do:
9 </span><span>÷ 3
This Is 3, So We Have:
3 * 4.
We Know That 3 * 4 Is 12, So:
We Know That The Answer To This Expression Is 12.</span>