Q: A-b plus a-b plus 2b plus 2a?

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No. A times B = AB

associative property

3x6 and 4x4. Solution got from: assume adjacent sides are a and b. Then (2a+2b)=ab. Multiply both sides by 2/(ab) to get 1/a + 1/b = 1/2 and the solution is obvious (if it wasn't in the first place).

x2+bx+ax+ab = x2+ax+bx+ab = x(x+a)+b(x+a) = (x+a)(x+b)

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2a(2b) Would Give You The Answer 4ab. 2x2 = 4 And a x b = ab.

ab + 2a + 3b + 6

(a + 3)( b + 2)

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so let's group and then factor ab+2a+3b+6= (ab+2a)+(3b+6)= a(b+2)+3(b+2)= (a+3)(b+2) and that is our final answer! Doctor Chuck

Preimeter is a measure of length, area ... well, of area. You can't really compare the perimeter and the area. If both are equal in one unit (like centimeter vs. square centimeter), they won't be equal in another unit (like meters and square meters). Anyway, to be numerically equal, you must solve the equation area = perimeter. Assuming dimensions of a times b, the equation becomes: ab = 2(a+b). Solving for a: ab = 2a + 2b ab - 2a = 2b a(b-2) = 2b a = 2b / (b-2) With this last equation, you can substitute any value for b, and get the corresponding value for a. It seems there are infinitely many solutions.

2ab

If, as is normal, ab represents a times b, etc then ab + ab + cc = 2ab + c2 which is generally not the same as abc.

A^2-2ab+B^2 is actually (A+B)^2 AB squared is A^2B^2 or (AB)^2

yes because ab plus bc is ac

AB pos or AB neg