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2 years ago

Expand and simplify (3m-2n)²

Mathematics

2 answers:

oee [108]2 years ago

7 0

Answer:

9m^2 - 12mn + 4n^2

Step-by-step explanation:

Olegator [25]2 years ago

7 0

Answer:

9m²-12mn+ 4n²

Step-by-step explanation:

First you expand it so

(3m-2n)(3m-2n)

9m²-6mn-6mn+4n²

9m²-12mn+ 4n²

And this is the simpliest form , hope this helped:))

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2 years ago

Simplify: <br> (sq root of) a^2 if a>0<br><br> (sq root of) 36x^2 if x≤0

tresset_1 [31]

Answer:

Step-by-step explanation:

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3 years ago

Find the value for x. Round your answer to the nearest hundredth. Area of the triangle = 8 ft^2

zmey [24]

Answer:

x = 3.51

Step-by-step explanation:

Since, formula to determine the area f a triangle is,

Area = $\frac{1}{2}(\text{Base})(\text{Height})$

8 = $\frac{1}{2}(x + 1)(3x - 7)$

16 = x(3x - 7) + 1(3x - 7)

16 = 3x² - 7x + 3x - 7

16 = 3x² - 4x - 7

0 = 3x² - 4x - 23

3x²- 4x - 23 = 0

By quadratic formula,

x = $\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$

x = $\frac{4\pm \sqrt{(-4)^{2}-4(3)(-23)}}{2(3)}$

x = $\frac{4\pm \sqrt{292}}{6}$

x = $\frac{4\pm 17.09}{6}$

x = 3.51, -2.18

But the length of sides can't be negative.

Therefore, x = 3.51 will be the answer.

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2 years ago

The equation of the line of best fit of a scatter plot y equals negative five x minus two what is the slope of the equation

sattari [20]

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Draw line.
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Hope that helps.

5 0

3 years ago

Simplify 2(-3×4)-10

maks197457 [2]

The answer is -34

Explication

2✖️(-12)-10
-24-10
-34

7 0

2 years ago

Read 2 more answers

Expand and simplify (3m-2n)²​

Expand and simplify (3m-2n)²