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marta [7]
3 years ago
10

(5x+4)(5x-4) using FOIL method, multiply the terms in the binomials

Mathematics
1 answer:
Ksju [112]3 years ago
3 0

Answer:

25x^2 - 16.

Step-by-step explanation:

(5x+4)(5x-4)

F = 5X*5X = 25X^2

O = 5x * - 4 = -20x

I = 4 + 5x = 20x

L = +4 * -4 = -16

So its

25x^2 - 20x + 20x - 16

= 25x^2 - 16.

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How do I use the subtraction theorem to write equivalent expressions?
Andreas93 [3]
The subtraction theorem states that for all real numbers, a and b, a-b=a+(-b).
(To subtract, we can add the inverse.)
Thus, we can have the these two equivalent expressions.

3 - 2 = 3 + (-2) = 1\\ \\ 5 - (-2) = 5 + 2 = 7


3 0
3 years ago
Explain how solving 4x < -16 is different from solving -4x< 16.
nalin [4]

Answer:

Dividing by 4 and -4

Step-by-step explanation:

Solving 4x < -16 is different from solving -4x< 16, because for 4x < -16, you are dividing by a positive 4 on both sides, but for -4x< 16, you are dividing by -4 on both sides.

3 0
1 year ago
Help!!! Quick answer please!
olga_2 [115]

Answer:

18 sq ft

Step-by-step explanation: all you have to do is add the sides. 5+5=10

4+4= 8

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This makes the most sense with the answers givin

3 0
3 years ago
Two rectangular prisms have a combined volume of 432 cubic feet. Prism A has half the volume of Prism B.
dexar [7]

Answer:

a. 144 cubic foot

b. 12 ft

c. 18 ft

Step-by-step explanation:

Let the volume of prism A be V_a

and that of prism b be V_b

ATQ,   V_a  +  V_b= 432

also V_a= 0.5 V_b

⇒1.5 V_b= 432

= V_b= 432/1.5= 288 cubic feet

therefore V_a= 144  cubic feet

volume of prism= area of base×height = V_a

24×h = 144

⇒h= 12 ft

A_b= 2/3×24

⇒base area of prism B= 16 sq.ft

now 16×h_b= 288⇒h_b= 288/16= 18 ft

3 0
4 years ago
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The population of Metsville is 1,274 people less than the population of Eden. If the population of Eden is 9,021 people, what is
yawa3891 [41]

Answer:

7,747

Step-by-step explanation:

9,021-1,274=7,747

4 0
3 years ago
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