Math

QuestionFind expressions equivalent to (9j7)+(5j+5)(9 j-7)+(-5 j+5). Options: 4j24 j-2, (5j+5)+(9j+7)(-5 j+5)+(9 j+-7), 2j+4-2 j+4, 9j+57+5j9 j+5-7+-5 j.

Studdy Solution

STEP 1

Assumptions1. We are given the expression (9j7)+(5j+5)(9 j-7)+(-5 j+5). . We are asked to find the expressions that are equivalent to the given expression.

STEP 2

First, let's simplify the given expression. We can do this by combining like terms.
(9j7)+(5j+5)=9j5j7+5 (9 j-7)+(-5 j+5) =9j -5j -7 +5

STEP 3

Now, let's simplify the expression further by performing the operations.
9j5j7+5=j29j -5j -7 +5 =j -2

STEP 4

Now, let's check the first option 4j24j -2. This is exactly the same as the simplified expression we obtained, so it is equivalent to the given expression.

STEP 5

Next, let's check the second option (5j+5)+(9j+7)(-5 j+5)+(9 j+-7). We can simplify this by combining like terms.
(5j+5)+(9j+7)=5j+9j+57 (-5 j+5)+(9 j+-7) = -5j +9j +5 -7

STEP 6

Now, let's simplify the expression further by performing the operations.
5j+9j+5=4j2 -5j +9j +5 - =4j -2 This is the same as the simplified expression we obtained, so it is also equivalent to the given expression.

STEP 7

Next, let's check the third option 2j+4-2 j+4. This is not the same as the simplified expression we obtained, so it is not equivalent to the given expression.

STEP 8

Finally, let's check the fourth option j+57+5j j+5-7+-5 j. We can simplify this by combining like terms.
j+57+5j=j5j7+5 j+5-7+-5 j =j -5j -7 +5

STEP 9

Now, let's simplify the expression further by performing the operations.
9j5j7+5=4j29j -5j -7 +5 =4j -2 This is the same as the simplified expression we obtained, so it is also equivalent to the given expression.
So, the expressions equivalent to (9j7)+(5j+5)(9 j-7)+(-5 j+5) are 4j24 j-2, (5j+5)+(9j+7)(-5 j+5)+(9 j+-7), and 9j+57+5j9 j+5-7+-5 j.

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