2 years ago

Simplify 3x^2(7x^2 + 2x -4)

Mathematics

1 answer:

arsen [322]2 years ago

6 0

Answer:

21x^4+6x^3-12x^2

Step-by-step explanation:

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Find the x-intercepts of the parabola with vertex (1,-108) and y-intercept (0,-105). Write your answer in this form: (X1,y1), (x

Stolb23 [73]

Answer:

(7, 0) and (-5, 0)

Step-by-step explanation:

<u>Vertex form</u>

$y=a(x-h)^2+k$

(where (h, k) is the vertex)

Given:

vertex = (1, -108)

$\implies y=a(x-1)^2-108$

Given:

y-intercept = (0, -105)

$\implies a(0-1)^2-108=-105$

$\implies a(-1)^2=-105+108$

$\implies a=3$

Therefore:

$\implies y=3(x-1)^2-108$

The x-intercepts are when y = 0

$\implies 3(x-1)^2-108=0$

$\implies 3(x-1)^2=108$

$\implies (x-1)^2=36$

$\implies x-1=\pm \sqrt{36}$

$\implies x=1\pm 6$

$\implies x=7, x=-5$

Therefore, the x-intercepts are (7, 0) and (-5, 0)

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2 years ago

[IMAGE] please help me with 1, 2, and 3

LUCKY_DIMON [66]

Answer:

1. 5n + 10d = 90

2. (18,0)

3. (0,9)

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3 years ago

Given g(x)= 10x + 2, find g(2)

nataly862011 [7]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

Which expression is equivalent to 2^4 ⋅ 2^−7?

skad [1K]

2^4 x 2^-7 = 0.125

2^3 = 8, 1 /8 = 0.125

answer is B

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3 years ago

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Montano1993 [528]

The answer is 6. you just count the boxes in between the two points

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3 years ago