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Ne4ueva [31]
3 years ago
12

How would the expression(x^2+4) (y^2+4) be rewritten using two squares?

Mathematics
2 answers:
RUDIKE [14]3 years ago
6 0
(xy-4)^2+(2x+2y)^2 for Apex
Salsk061 [2.6K]3 years ago
4 0

Answer:

 (xy+4)^2+(2x-2y)^2

Step-by-step explanation:

Given:   (x^2+4)(y^2+4)

Solution:

Now we rewrite the equation using two squares

(x^2+2^2)(y^2+2^2)

multiply term by term,

(xy)^2+(2x)^2+(2y)^2+(2.2)^2

rearrange the order

(xy)^2+(2.2)^2+(2y)^2+(2x)^2

add and subtract 8xy

(xy)^2+2(xy)(2.2)+(2.2)^2+(2y)^2-2(2y)(2x)+(2x)^2

using formula  (a+b)^2= a^2+2ab+b^2

(xy+4)^2+(2x-2y)^2

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Kathryn deposits 100 into an account at the beggining of each 4 year period for 40 years. The account credits interest at an eff
OleMash [197]

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6194.84

Step-by-step explanation:

Using the formula for calculating accumulated annuity amount

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For 40 years,

X = 100[(1 + i)^40 + (1 + i)^36 + · · ·+ (1 + i)^4]

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For 20 years,

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so (1 + i)^20 = 4

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