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STALIN [3.7K]
3 years ago
9

What is the value of m2-2mn+n2 for m=-2 and n=4

Mathematics
2 answers:
valkas [14]3 years ago
7 0
M2 -2mn + n2 = 4 - (-16) + 16 = 20 + 16 = 36 Have a nice days.......
MArishka [77]3 years ago
3 0

Answer:  The required value is 36.

Step-by-step explanation:  We are to find the value of the following expression for m = -2 and n = 4 :

m^2-2mn+n^2.

Substituting the values m = -2 and n = 4 in the given expression, we get

m^2-2mn+n^2\\\\=(-2)^2-2\times (-2)\times 4+4^2\\\\=4+16+16\\\\=36.

Thus, the required value is 36.

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6 0
2 years ago
Given the function f(x)=x2+2x+1, find:<br><br> f( (2a−3)/5 ) =<br><br> Show working please!
Rina8888 [55]
<h3>Given</h3>
  • f(x) = x² + 2x + 1
<h3>Find</h3>
  • f((2a-3)/5)
<h3>Solution</h3>

It can be convenient to rewrite f(x) as a square, then do the substitution. That way, the algebra is simplified a little bit.

... f(x) = (x +1)²

... f((2a-3)/5) = ((2a-3)/5 +1)² = ((2a -3 +5)/5)²

... = (2/5(a+1))²

... f((2a-3)/5) = (4/25)(a² +2a +1)

7 0
3 years ago
2x-y-3z=7, 3x+y+=10, 5x+y+2z=15
ivann1987 [24]

Answer:

x=22/7 y=4/7 z=-3/7

Step-by-step explanation:

4 0
2 years ago
If 1 mile equals 5280 feet and an escalator moves at a rate of 2 feet per second. At what rate does the escalator move in miles
Sever21 [200]
Ratio=2 ft/s
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2 years ago
Read 2 more answers
What is 24/100 simplified
pav-90 [236]
24/100 simplified is 6/25
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2 years ago
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