3 years ago

❌Will mark brainliest answer

Mathematics

1 answer:

Mila [183]3 years ago

5 0

It’s a black screen?

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Algebraic expression and identity 1)simplify the following (3a+b)3 +(3a-b)3

mylen [45]

Answer:

$(3a+b)^3+(3a-b)^3=54a^3+18ab^2$

Step-by-step explanation:

Given: $(3a+b)^3+(3a-b)^3$

Formula: $x^3+y^3=(x+y)(x^2-xy+y^2)$

$(x+y)^2=x^2+2xy+y^2$

$(x-y)^2=x^2-2xy+y^2$

$x\rightarrow 3a+b$

$y\rightarrow 3a-b$

$\Rightarrow (3a+b+3a-b)((3a+b)^2-(3a+b)(3a-b)+(3a-b)^2)$

$\Rightarrow (6a)(9a^2+b^2+6ab-9a^2+b^2+9a^2+b^2-6ab)$

$\Rightarrow (6a)(9a^2+3b^2)$

$\Rightarrow 54a^3+18ab^2$

5 0

3 years ago

What is 22(2+20)= an anyone one bored

Jobisdone [24]

22 x 2 equals 22 and 22 x 20 equals 440 and you add 22 and 440 and get 462

6 0

3 years ago

Read 2 more answers

Find the center of the circle whose equation is (x+15)2+(y-20)2=100

Sindrei [870]

Answer: (- 15, 20)

Step-by-step explanation:

In the format (x – h)² + (y – k) = r², the center of the circle is at point (h, k).

-> The negatives in the first equation, bolded and underlined, means we change the sign of positive to negative or negative to positive.

(x - h)² + (y - k) = r²

(x + 15)² + (y - 20)² = 100

(x - 15)² + (y + 20)² = 100

(x - 15)² + (y + 20)² = 100

(- 15, 20)

We can also see this with graphing. See attached.

The center of the circle will be at point (- 15, 20).

7 0

2 years ago

Want 20 POINTS easy answer these questions

horsena [70]

148 divided by 28= 5.28

220 divided by 12= 18.33

192 divided by 15=12.80

20 divided by 3=6.66

6 0

4 years ago

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(11/4) of a number is 44. What is the number?

iogann1982 [59]

11/4 x = 44
x = 44 .(4/11)
x = 16

answer (11/4) of 16 is 44

4 0

3 years ago