Answers

  • Brainly User
2016-07-08T06:30:13+08:00
Pattern:
(a + b + c)² = a² + b² + c² + 2ab + 2ac + 2bc

Solution:
81x⁴ + 64y⁴ + 49z⁸ + 2(9x²)(8y²) + 2(9x²)(7z⁴) + 2(8y²)(7z⁴)

ANSWER(in standard form):

81x⁴ + 144x²y² + 126x²z⁴ + 64y⁴ + 112y²z⁴ +  49z⁸

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