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Stells [14]
4 years ago
12

Number 53

Mathematics
1 answer:
Solnce55 [7]4 years ago
8 0
X-intercepts
f(x) = 0

4x² - 15x - 4 = 0

4x² - 16x + x - 4 = 0

4x(x - 4) + 1(x - 4) = 0

(x - 4)(4x + 1) = 0 ⇔ x - 4 = 0 or 4x + 1 = 0

x = 4 or 4x = - 1 ⇒ x = - 1/4

Answer: -1/4 and 4.
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dsp73

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5 0
4 years ago
Will mark brainliest if right and show your work...
skelet666 [1.2K]
<h2>9x^4 - 6x^2 - 3x - 6</h2><h2 />

(9x^4-13x^3-x-7)+(7x^3-2x+1)  

Sort the terms by their powers, as x's with the same powers can be added together:

9x^4

-13x^3 + 7x^3 = -6x^3

-x - 2x = -3x

-7 +1  = -6

<h2>9x^4 - 6x^2 - 3x - 6</h2>
5 0
4 years ago
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