Question

$x {}^{2} + 4x + 8 \times x {}^{2} - 4x + 8$
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Answer 1

Step-by-step explanation:

(x² + 4x + 8) × (x² - 4x + 8)

x²(x² - 4x + 8) + 4x(x² - 4x + 8) + 8(x² - 4x + 8)

x⁴ - 4x³ + 8x² + 4x³ - 16x² + 32x + 8x² - 32x + 64

x⁴ + 8x² - 16x² + 8x² + 64

x⁴ + 16x² - 16x² + 64

x⁴ + 64