3 years ago

Can someone help with this question?

2 answers:

8 0

= 2x^2 + 5 - 4x + 3
= 2x^2 - 4x + 8

answer is B

5 0

When you subtract flip the signs of the second set.
2x^2+5-4x+3

Now combine like terms
2x^2-4x+8

Final answer: B

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svetoff [14.1K]

Answer:

$x=\dfrac{\pi k}{2},\ k\in Z.$

Step-by-step explanation:

Simplify the equation $(\sin x-\cos x)^2=1:$

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4 years ago