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aliina [53]
3 years ago
15

What algebraic expression models the word phrase three fewer than the sum of c and d?

Mathematics
2 answers:
mestny [16]3 years ago
6 0
Sum means to add so, 
(c + d) - 3
The parenthesis are just there to keep c and d together. 
Serjik [45]3 years ago
4 0
" the sum " means add

(c + d) - 3 <== ur expression
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Step-by-step explanation:

Ok, so we know that trinomials like this are squares of binomials. this in mind, we know that it can also be written as (x+y)^2. (also brainly's exponents feature used to be better, if the exponents are confusing you, comment.) Using the (x+y)^2 equation, you know that by simplifying it, you get x^2+2xy+y^2. Basically we're looking for x^2. Using the middle term, 2xy, or 12x in this equation, we can find x. since we know the square root of 1 is 1, we know 12=2x. This is kinda confusing, but basically since the answer is 6, we know that the x-term is 6x. We square 6x and get 36x^2. guaranteed to work on the rsm student portal, i'm in rsm and i just answered this question.

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