Join expressions of equal value
a.
b.
c.
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Join expressions of equal value
a.
b.
c.
To solve this problem, we'll follow these steps:
Step 1: Expand each original expression.
- For Expression 1: expands to .
- For Expression 2: expands to .
- For Expression 3: expands to .
Step 2: Match each expanded expression to the provided options:
- Expression 1: matches with option b.
- Expression 2: matches with option a.
- Expression 3: matches with option c.
Therefore, the correct mapping of expressions is:
1-b, 2-a, 3-c.
1-b, 2-a, 3-c
\( (3+20)\times(12+4)= \)
When you multiply two binomials, each term in the first binomial multiplies with each term in the second binomial. So x multiplies with both a and g, then 3 multiplies with both a and g, giving you four terms total.
Two expressions are equivalent if they have the same terms with the same coefficients. Expand both expressions completely and check that every term matches, even if they're written in different orders.
There's no difference! Multiplication is commutative, so . Both expressions represent the same value and can be used interchangeably.
The signs come from the original expression! When you see , the minus sign distributes: a times x gives , but -g times x gives .
Yes! Addition and subtraction are commutative, so you can write terms in any order. is the same as or .
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