3 years ago

Which expression is equivalent to x^6-9

Mathematics

1 answer:

svlad2 [7]3 years ago

6 0

Answer: (x^3)^2 - 3^2

Step-by-step explanation:

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Simplify : (√ + √ ) (√ − √) ( + )( 2 + 2 )

jek_recluse [69]

$(\sqrt{x}+\sqrt{y})(\sqrt{x}-\sqrt{y})(x+y)(x^2+y^2)\\\\=[(\sqrt{x})^2-(\sqrt{y})^2](x+y)(x^2+y^2)\\\\=(x-y)(x+y)(x^2+y^2)\\\\=(x^2-y^2)(x^2+y^2)\\\\=(x^2)^2-(y^2)^2\\\\=x^4-y^4$

$Used:\\\\(\sqrt{a})^2=a\\\\(a-b)(a+b)=a^2-b^2\\\\(a^n)^m=a^{nm}$

6 0

3 years ago

Andrew is two years older than Beatrice, and Chris is three years younger than Beatrice.

In-s [12.5K]

Answer:

Beatrice's age is 34

Step-by-step explanation:

Beatruce = B

Andrew = B+2

Chris= B-3

B+(B+2) +(B-3 )= 67-B

3B-1 = 67-B

2B -1 = 67

2B= 68

B = 34

Beatrice is 34

Andrew is 36 (34+2)

Chris is 31 (34-3)

36+31 = 67

6 0

2 years ago

Please solve asap thanks

natima [27]

Answer:

6x+36=180

6x=144

x=24

Step-by-step explanation:

this is the correct answer

8 0

3 years ago

Read 2 more answers

What is the minimum value of the function y=|x+3|-2 ?

lesya692 [45]

Minimum value of the function is - 2

hope that helps

6 0

3 years ago

Is the given pair a solution <br>y=-x -2; (2,-4)

nignag [31]

Yes
because
when x =2 then y = -(2) - 2 = -4

so (2,-4) is a solution

hope it helps

6 0

3 years ago