$x^2-14x+21=0\\\\x^2-2x\cdot7+7^2-7^2+21=0\\\\(x-7)^2-49+21=0\\\\(x-7)^2-28=0\\\\(x-7)^2=28\iff x-7=-\sqrt{28}\ \vee\ x-7=\sqrt{28}\\\\x=7-\sqrt{4\cdot7}\ \vee\ x=7+\sqrt{4\cdot7}\\\\x=7-2\sqrt7\ \vee\ x=7+2\sqrt7$

4 0

3 years ago

Where is the hole for the following function located?<br> f(x)=x+3<br> (x-4)(x+3)

monitta

The correct answer is A

3 0

3 years ago

Find the measure of arc WVY.

german

Answer:

arc WVY = 265.4°

Step-by-step explanation:

arc XY = arc WX because ZY = WZ

360° - 47.3° - 47.3° = 265.4°

7 0

2 years ago

There are Chickens and Pigs in a Barnyard. The Farmer counts 54 heads and 144 feet. How many Chickens and Pigs are in the Barnya

HACTEHA [7]

54, only heads count, not feet.

5 0

3 years ago

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