I have this for my math review & i just don't seem to get it...
what is (.9x+.8y)^2
Can you take the quantity [ x + y ] and square it ?
Can you take the quantity [ x + 2y ] and square it ?
Then you should have no trouble with the square of (.9x + .8y) .
The square of any binomial (expression with 2 terms) is
(square of the first term)
+ (square of the second term)
+ 2 times (product of the terms) .
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Mathematics, published 11.05.2023
Mathematics, published 23.03.2023