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Arada [10]
3 years ago
13

9x^2-25 Yea, it confused me too I need this explained to me pls and thank you.​

Mathematics
1 answer:
Veseljchak [2.6K]3 years ago
4 0

Answer:

What this is is factoring and these are both perfect squares.

(3x-5)(3x+5) is the answer.

Step-by-step explanation:

First we take the 9x^2-25 and split in in two statements

(3x-5) (3x+5)

then foil to check it

first side: 3x*3x=9x^2

outside: 3x*5=15x

inside: -5*3x=-15x

last: -5*5=-25

then put it together

9x^2+15x-15x-25

the 15x and -15x cancel each other out so you're left with 9x^2-25

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mart [117]

Answer:

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General Formulas and Concepts:

<u>Algebra I</u>

  • Roots are when the polynomial are equal to 0

<u>Algebra II</u>

  • Synthetic Division

Step-by-step explanation:

<u>Step 1: Define</u>

Function f(x) = x³ - 10x² + 27x - 12

Divisor/Root (x + 1)

<u>Step 2: Synthetic Division</u>

<em>See Attachment.</em>

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<em>Please excuse the bad handwriting. Hope this helped!</em>

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