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3 years ago

Write the expression (4X -2)•6(2X +7)in the standard form of a quadratic expression

1 answer:

3 0

(4x - 2) x (12x +42) (I distributed the 6 over the 2x and the 7)

Using the FOIL method
First terms (in each parenthesis) 4x times 12 x = 48x²
Outer terms 4x times 42 = 168x
Inner terms -2 times 12 x = -24x
Last terms -2 times 42 = -84

So we have 48x² + 168x + 168x - 24x -84
Finally combine like terms:

48x² + 144x - 84 There's your quadratic expression

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Which equation is a point slope form equation for line AB ?

Jobisdone [24]

For this case we have that by definition, the equation of a line of the point-slope form is given by:

$y-y_ {0} = m (x-x_ {0})$

Where:

m: It's the slope

$(x_ {0}, y_ {0}):$ It is a point through which the line passes

To find the slope, we need two points through which the line passes, observing the image we have:

$(x_ {1}, y_ {1}): (1,6)\\(x_ {2}, y_ {2}): (5, -2)\\m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}} = \frac {-2-6} {5-1} = \frac {-8} {4} = -2$

Thus, the equation is of the form:

$y-y_ {0} = - 2 (x-x_ {0})$

We choose a point:

$(x_{0}, y_ {0}) :( 5, -2)$

Finally, the equation is:

$y - (- 2) = - 2 (x-5)\\y + 2 = -2 (x-5)$

Answer:

$y + 2 = -2 (x-5)$

3 0

3 years ago

5^2= (-5)^2 true or false

Nonamiya [84]

It’s True because of 5 square is equal to 25
Than (-5) square is also get the same value as 5^2

8 0

3 years ago

The product of two consecutive positive even numbers is 288. By forming and solving an equation, find the larger of the two numb

aev [14]

Ok. I’m not the smartest person. But, if I understand the question I have to divide 288 by 2. That would be 144.. but it seems too easy. Correct me if I’m wrong

8 0

2 years ago

Solve for x. x = 30 27 33

pentagon [3]

Answer:

the answer is 27

Step-by-step explanation:

3x+9+90=180

3x+99=180

3x=180-99

x=81/3

x=27

7 0

2 years ago

Read 2 more answers

Solve for x. 3x-161 7x-382

Sholpan [36]

Answer:

Step-by-step explanation:

7x - 382 = 3x - 161

4x - 382 = -161

4x = 221

x = 55.25

3 0

3 years ago