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wlad13 [49]
3 years ago
14

What is the factorization of the polynomial below? 9x2 - 16

Mathematics
2 answers:
Agata [3.3K]3 years ago
8 0

use (a-b) (a+b )

(3x+4) (3x- 4)

saul85 [17]3 years ago
3 0
<h3><u>Answer</u><u>:</u><u>-</u></h3>

\bigcirc(9x+4)(x-4)

\bigcirc(9x-4)(x-4)

\odot(3x+4)(3x-4)

\bigcirc(3x-4)(3x-4)

<h2>_____________________</h2><h3><u>Calculations</u><u>:</u><u>-</u></h3>

<h2><u>Let's</u><u> </u><u>Factori</u><u>s</u><u>e</u><u>:</u><u>-</u></h2>

{:}\leadsto \sf 9x^2-16

  • Let's use algebraic identity for factorisation

{\boxed{\sf (a+b)(a-b)=(a)^2-(b)^2}}

  • Here see 16 is the square of 4 and 9x^2 is the square of 3x

{:}\leadsto \sf 3x^2-4^2

  • Now According to identity

{:}\leadsto \sf (3x+4)(3x-4)

<h3>Hence the correct option is option C.</h3>

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Can someone help me with this pls
Oksi-84 [34.3K]

Answer:

x = 1/3 or x = -2/3

Step-by-step explanation:

Let's solve your equation step-by-step.

9x2+3x−2=0

For this equation: a=9, b=3, c=-2

9x2+3x+−2=0

Step 1: Use quadratic formula with a=9, b=3, c=-2.

x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}

x=\frac{-(3)\pm\sqrt{(3)^2-4(9)(-2)} }{2(9)}

x=\frac{-3\pm\sqrt{81} }{18}

x = 1/3 or x = -2/3

4 0
2 years ago
Read 2 more answers
HELP! 8TH GRADE MATH PLS LOL
LekaFEV [45]
<h2><u>Given</u><u>:</u><u>-</u></h2>

{ \large{➢ \:  \:  \bf{x =  - 8}}}

<h2><u>Solution</u><u>:</u><u>-</u></h2>

{ \large{➢ \:  \:  \bf{ \dfrac{2y}{3}  = 3 \times  - 8 + 34}}}

{ \large{➢ \:  \:  \bf{ \dfrac{2y}{3}  =  - 24 + 34}}}

{ \large{ \bf{ ➢ \:  \: \cancel{2}y = 3 \times { \cancel{(10)} {} \:  \:  ^{5} }}}}

{ \large{ \therefore{  \bf{y = 15 \:  \: Ans.}}}}

3 0
3 years ago
A 2-ft vertical post casts a 16-in. shadow at the same time a nearby cell phone tower casts a 120-ft shadow. How tall is the cel
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Do 120÷8 aka 15  that is the answer 
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3 years ago
Identify the variable expression that is not a polynomial. A. 23 B. + 2 C. y + 1 D. x12
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A polynomial consists of several terms so A.23
4 0
3 years ago
Aaron, Bonny and Connor are playing a game with cards.
professor190 [17]

Let the number of cards Aaron has : A

Given :

⊕   Bonny has twice as many cards as Aaron

⊕   Connor has 6 cards more than Bonny

⊕   Total cards : 101

⇒  Number of cards Bonny has : 2A

⇒  Number of cards Connor has : 2A + 6

⇒   Aaron cards + Bonny cards + Connor cards = 101

⇒   A + 2A + 2A + 6 = 101

⇒   5A = 101 - 6

⇒   5A = 95

⇒   A = 19

<u>Answer</u> : Aaron has 19 Cards

6 0
3 years ago
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