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Nina [5.8K]
3 years ago
13

Write the given trinomial if possible as a square of a binomial or as an expression opposite to a square of a binomial: 15ab-9a^

2-6 1/4b^2
Mathematics
1 answer:
MrMuchimi3 years ago
3 0

Answer:

- \bigg(3a -  \frac{5}{2} b) \bigg)^{2}

Step-by-step explanation:

15ab-9a^2-6  \frac{1}{4} b^2 \\  \\  = 15ab-(3a)^2-\frac{6 \times 4 + 1}{4} b^2 \\  \\ = 15ab-(3a)^2-\frac{24+ 1}{4} b^2 \\  \\ = 15ab-(3a)^2-\frac{25}{4} b^2 \\  \\   = 15ab- (3a)^2- \bigg(\frac{5}{2} b \bigg)^2  \\  \\ =  -  \{ - 15ab + (3a)^2 +  \bigg(\frac{5}{2} b \bigg)^2  \} \\  \\ =  -  \{ (3a)^2 +  \bigg(\frac{5}{2} b \bigg)^2 - 15ab  \} \\  \\  =   - \bigg(3a -  \frac{5}{2} b \bigg)^{2}

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stepan [7]
First, let’s multiply 0.01 by 4 to get 1% of 4.00
0.01 x 4 = 0.04
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0.04 x 10 = 0.4
The discount means to subtract the 10% from the 4.00
4 - 0.4 = $3.60
Now we have the discount price.
Next, we have to find 6% of 3.60 to add to the discount price.
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0.01 x 3.6 = 0.036
We’ll then multiply that 1% by 6 to get the 6% sales tax that we’ll add to our discount price.
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Since money doesn’t go into the thousandths column, we’ll round 3.816 to 3.82
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Hope that helped! :)
7 0
4 years ago
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Can someone help me please
Neko [114]

Answer:

Step-by-step explanation:

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6 0
3 years ago
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8_murik_8 [283]

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8 0
3 years ago
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Irina-Kira [14]

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Answer:

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