3 years ago

Factor the expression below.

Mathematics

2 answers:

11111nata11111 [884]3 years ago

6 0

Answer:

D. (x-5) (x-5)

Step-by-step explanation:

x•x=x`2

x•-5= -5x

-5•x=-5x ((-5x)+(-5x)=-10x)

-5•-5=+25

Serjik [45]3 years ago

5 0

Answer:

The answer is C

Step-by-step explanation:

5(2x-x^2+5)

10x-5x^2+25

-5^2+10x+25

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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago

And right triangle sin (40 - x)° equals cos(3x)° degrees what is the value of x.

Drupady [299]

$\qquad\qquad\huge\underline{{\sf Answer}}♨$

Let's solve ~

$\qquad \sf \dashrightarrow \: \sin(40 - x) = \cos(3x)$

$\qquad \sf \dashrightarrow \: \cos\{90 - (40 - x ) \} = \cos(3x)$

$\qquad \sf \dashrightarrow \:90 - (40 - x) = 3x$

$\qquad \sf \dashrightarrow \:90 - 40 + x = 3x$

$\qquad \sf \dashrightarrow \:3x - x = 50$

$\qquad \sf \dashrightarrow \:2x = 50$

$\qquad \sf \dashrightarrow \:x = 25 \degree$

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