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3 years ago

If x = -2, calculate the value of: xcubed + xsquared

Mathematics

2 answers:

laiz [17]3 years ago

6 0

-2*-2*-2 = ?
-2*-2 = ?
-8+4= -4
answer is -4

Elan Coil [88]3 years ago

5 0

X cubed = -8

-2 x -2 = 4
4 x -2 = -8

x squared = 4

-2 x -2 = 4

-8 + 4 = -4

xcubed +xsquared = -4

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Find the measure of the angle indicated in bold. Plus the theorem.

liberstina [14]

Consecutive interior theorem

X+96+96+x= 180
2x+192=180
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7 0

3 years ago

Number 8 please thanks!

WINSTONCH [101]

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2 years ago

A boy throws a baseball across a field. The ball reaches its maximum height, 18 meters, after 1 second. After approximately 2.3

Jobisdone [24]

That would be
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5 0

3 years ago

Read 2 more answers

Find the zeros of y = x2 – 6x – 4 by completing the square.

katrin [286]

Answer:

The solutions to the quadratic equations are:

$x=\sqrt{13}+3,\:x=-\sqrt{13}+3$

Step-by-step explanation:

Given the function

$y\:=\:x^2\:-\:6x\:-\:4$

substitute y = 0 in the equation to determine the zeros

$0\:=\:x^2\:-\:6x\:-\:4$

Switch sides

$x^2-6x-4=0$

Add 4 to both sides

$x^2-6x-4+4=0+4$

Simplify

$x^2-6x=4$

Rewrite in the form (x+a)² = b

But, in order to rewrite in the form x²+2ax+a²

Solve for 'a'

2ax = -6x

a = -3

so add a² = (-3)² to both sides

$x^2-6x+\left(-3\right)^2=4+\left(-3\right)^2$

$x^2-6x+\left(-3\right)^2=13$

Apply perfect square formula: (a-b)² = a²-2ab+b²

$\left(x-3\right)^2=13$

$\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}$

solve

$x-3=\sqrt{13}$

Add 3 to both sides

$x-3+3=\sqrt{13}+3$

Simplify

$x=\sqrt{13}+3$

now solving

$x-3=-\sqrt{13}$

Add 3 to both sides

$x-3+3=-\sqrt{13}+3$

Simplify

$x=-\sqrt{13}+3$

Thus, the solutions to the quadratic equations are:

$x=\sqrt{13}+3,\:x=-\sqrt{13}+3$

4 0

3 years ago

Jordan needs 6 3/10 gallons of milk to make four and a half gallons of ice cream. how many gallons of milk would Jordan need to

Masteriza [31]

Answer:

it would take 1 4/10 gallons of milk to make 1 gallon of ice cream.

Step-by-step explanation:

4.5/1=6.3/x

4.5x=6.3

x=1.4

hope that helps have a good day

8 0

2 years ago

Read 2 more answers