The given expression can be simplified in many ways by grouping like terms. The simplest form is obtained by factoring out a²b which gives us the following expression.

a²b(7 + 10b +14b²)

3 0

3 years ago

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Solve: 2x - 3 = 2x - 5. A) -2 B) 0 C) 5 3 D) no solution

dezoksy [38]

2x -2x - 3 = 2x - 2x - 5 <em>subtract 2x from both sides</em>

-3 = -5 FALSE

<h3>Answer: D) no solution</h3>

4 0

3 years ago

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How would you do number 12 and 15?

Gnesinka [82]

Answer:

$x_1=x_2=-\dfrac{2}{3}$

Step-by-step explanation:

For the quadratic equation $ax^2+bx+c=0$ the discriminant is defined as

$D=b^2-4ac$

and the quadratic formula for the roots gives us two roots:

$x_1=\dfrac{-b-\sqrt{D}}{2a}$

and

$x_2=\dfrac{-b+\sqrt{D}}{2a}$

For the equation $9x^2 +12x+4=0$ use quadratic formula to find roots:

$D=12^2-4\cdot 9\cdot 4=144-144=0$

So,

$x_1=x_2=\dfrac{-12\pm \sqrt{0}}{2\cdot 9}=-\dfrac{12}{18}=-\dfrac{2}{3}$

7 0

4 years ago

Ms.hernandez is taking her children and their friends to the movies. She will pay $10 for her adult tickets and $7 for each chil

astraxan [27]

Answer:

10a + 7c < 40

Step-by-step explanation:

5 0

3 years ago