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coldgirl [10]
3 years ago
12

What is the expression 4x^2 - 25 is equivalent to

Mathematics
1 answer:
kvasek [131]3 years ago
4 0

Answer:

\large\boxed{4x^2-25=(2x-5)(2x+5)}

Step-by-step explanation:

a^2-b^2=(a-b)(a+b)\\\\4x^2-25=2^2x^2-5^2\qquad\text{use}\ (ab)^n=a^nb^n\\\\=(2x)^2-5^2=(2x-5)(2x+5)

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i need answers by tonight or the morning. its due tomarrow and im scarred to ask the teacher what to do.
kompoz [17]
I’ll explain part A and you can apply it to the other parts. The functions f(x), g(x), and m(x) are all equivalent to the given polynomials. So when it asks for f(x) + [g(x) - m(x)] you plug them in. The answer to Part A is 3x^2 +5x - z + [5x^2-3x+z - 2x^2 - 2x]. Combine the like terms (3x^2+5x^2-2x^2 = 6x^2 (because 3+5-2=6)) and so on until you’ve simplified it as much as possible!
4 0
3 years ago
I need help to find X
Liono4ka [1.6K]

Step-by-step explanation:

trigonometric functions such as sin cos and tan will help u solve this

6 0
4 years ago
What is the comma asking me to do is it divide or mutiply
Dovator [93]
It is asking you to divide
3 0
4 years ago
In 1935 american athlete jesse owens set a world record for the long jump by jumping 26ft 8 1/6 in.In 1960 ralph boston set a ne
shtirl [24]

Step 1

Subtract 26 ft 8 1/6 in from 26 ft 11 1/4 in

(26 ft 11 1/4 in)-(26 ft 8 1/6 in)=11 1/4 in-8 1/16 in

we know that

11 1/4=(11*4+1)/4=45/4

8 1/16=(8*16+1)/16=129/16

so

11 1/4 in-8 1/16 in=(45/4)-(129/16)

=(4*45-129)/16

=51/16 in--------> 3 3/16 in

therefore

<u>the answer is</u>

3 3/16 in

4 0
4 years ago
Help with question 3 please
mel-nik [20]
Score = 6x+y

so 6x+y = xy
⇒ 6x = xy-y
⇒ 6x = y(x-1)
⇒ y = 6x/(x-1)

for x=0, y=0
x=1 , not possible
x=2, y = 12
x = 3, y = 9
x = 4, y = 8
x = 5, y = 7.5 (not possible)
x = 6 , y = 7.1 (not possible)
x = 7, y = 7
x = 8, y = 6.85 (not possible)
x = 9, y = 6.75 (not possible)...

Only five scores are possible.


6 0
4 years ago
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