All categories

3 years ago

ALGEBRA 1 HOMEWORK!!!

Mathematics

2 answers:

ale4655 [162]3 years ago

6 0

Answer:

Factoring: (x+4)(x-6), x=-4 or x=6

Quadratic formula: x=6 or x=-4

Step-by-step explanation:

Factoring: (Reverse foil)

x^2-2x-24

because there are two - sign then we know it is

(x+ something)(x- something)

looking at the factors of 24 we can see that 6 and 4 are factors and 6-4=2 so

(x-6)(x+4)must be the factored form.

However the sign of x values in factored form changes when not in parenthesis so it would become x=6, and x=-4

Quadratic formula:

the quadratic formula is [-(b)+or-sqrt(b^2-4(a)(c)]/2(a)

in this case a=1, b=-2, c=-24 so it would be

[2+or-sqrt-2^2-4(1)(-24)]/2(1)=

[2+or-sqrt4-(-96)]/2=

[2+or-sqrt100]/2=

[2+or-10]/2=

1+or-5=

1+5 or 1-5

so x=6 or x=-4

Likurg_2 [28]3 years ago

3 0

Answer:

it a

Step-by-step explanation:

because this ^ means its a because it is factoring out

You might be interested in

Write the equation of the line in point-slope form that passes through (5, -1) and has a slope of 2/3

kolezko [41]

Answer:

y-(-1)=2/3(x-5)

Step-by-step explanation:

Point slope form is

y-y_1=m(x-x_1) where m is the slope, x_1 is the x coordinate of a point that the line passes through, and y_1 is the y coordinate of a point the line passes through.

Substituting, we get

y-(-1)=2/3(x-5)

5 0

3 years ago

Whats (2x-3y+4z)+(9x-8y+7z)

eduard

Answer:

=(2x-3y+4z)+(9x-8y+7z)

=2x+9x-3y-8y+4z+7z

=11x-11y+11z

hope like the answer

please mark the answer as brainliest

4 0

3 years ago

What is the derivative of g(x)=e^(x^2+2x)+3x

UNO [17]

Ok first we can split it in two : $e^{x^2+2x}$ and $3x$ .

The derivative of $3x$ is 3.

For the first part, we use the chain rule : $[f(g(x))]'=g'(x)f'(g(x))$ hence $(e^{x^2+2x})'=(x^2+2x)'e^{x^2+2x}$ (since the derivative of the exponential is itself) hence $g'(x)=(2x+2)e^{x^2+2x}+3$