Uprosć wyrażenie a) b)2(x-2)²-2(x²+4).... Question from @Takatoo234

January 2019 1 12 Report

Uprosć wyrażenie
a) $( x\sqrt{3} +3x \sqrt{2} ) ^{2}$
b)2(x-2)²-2(x²+4)

basetla A)
(x√3 + 3x√2)² = (x√3)² + 2 * x√3 * 3x√2 + (3x√2)² = 3x² + 6√6x² + 18x² =
= 21x² + 6√6x² = x²(21 + 6√6)

b)
2(x - 2)² - 2(x² + 4) = 2(x² - 4x + 4) - 2x² - 8 = 2x² - 8x + 8 - 2x² - 8 = -8x

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