3 years ago

Simplify the expression and show your work PLEASE ANSWER ASAP

Mathematics

1 answer:

BabaBlast [244]3 years ago

3 0

Answer:

2x^2√2zx

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This can give you a head start, but there is information on how to do this provided by your teachers. You can do this! :D Good luck!

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What is the value of the expression 2x2+3xy-y2, when x=2 And y=-4

Otrada [13]

Plug in 2 for x, and -4 for y

2(2)² + 3(2)(-4) - (-4)²

2² = 4(2) = 8
3(2) = 6(-4) = -24
-4² = 16

8 - 24 - 16 = answer

Simplify.

answer = 8 - 40
answer = -32

-32 is your answer

hope this helps

7 0

3 years ago

Distance between points (7,6) (-3,-1)

GaryK [48]

Answer:

Step-by-step explanation:

(7,6) (-3,-1)

(x1,y1) (x2,y2)

$Distance=\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}\\\\=\sqrt{(-3-7)^{2}+(-1-6)^{2}}\\\\=\sqrt{(-10)^{2}+(-7)^{2}}\\\\=\sqrt{100+49}=\sqrt{149}\\\\=12.21$