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Naddik [55]
3 years ago
11

Evaluate (2x^2+y^2)3

Mathematics
2 answers:
Alona [7]3 years ago
7 0

Answer:

8x^{6} + 12x^{4}y² + 6x²y^{4} + y^{6}

Step-by-step explanation:

This can be expanded using the binomial theorem or by multiplying the factors.

In case you are not aware of the theorem, will do multiplication.

Given

(2x² + y²)³ = (2x² + y²)(2x²+ y²)(2x² + y²)

Expanding the second pair of factors

Each term in the second factor is multiplied by each term in the first factor, that is

2x²(2x² + y²) + y²(2x² + y²) ← distribute both parenthesis

= 4x^{4} + 2x²y² + 2x²y² + y^{4} ← collect like terms

= 4x^{4} + 4x²y² + y^{4}

Now multiply this by the remaining factor (2x² + y²)

(2x² + y²)(4x^{4} + 4x²y² + y^{4})

= 2x²(4x^{4} + 4x²y² + y^{4}) + y²(4x^{4} + 4x²y² + y^{4}) ← distribute both parenthesis

= 8x^{6}+ 8x^{4}y² + 2x²y^{4} + 4x^{4}y² + 4x²y^{4} + y^{6} ← collect like terms

= 8x^{6} + 12x^{4}y² + 6x²y^{4} + y^{6}

Finger [1]3 years ago
6 0

The Answer is 6x2+3y2

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Step-by-step explanation:

Time for which signal shows green light = 4 minutes

Time for which signal shows yellow light = 10 seconds

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