factoriser (X-2)²-4x8² factoriser 3²X²-2x3x2X+2²=(3²
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Question
factoriser (X-2)²-4x8² factoriser 3²X²-2x3x2X+2²=(3²X²)-2x3x2X+2²
factoriser (3X-2)-(8X+3)(3X-2)+(3X-2)²
factoriser (3X-2)-(8X+3)(3X-2)+(3X-2)²
1 Réponse
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1. Réponse Anonyme
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1) factoriser (X-2)²-4x8²
(x - 2)² - 4*8² = (x - 2)² - 2² * 8²
=[(x - 2) - 2*8][(x - 2) + 2*8]
=(x - 2 - 16)(x - 2 + 16)
=(x - 18)(x + 14)
2) 3²X²-2x3x2X+2²=(3²X²)-2x3x2X+2²
3² * x² - 2 * 3 * 2x + 2² = (3x)² - 2 * (3x) * 2 + 2²
= (3x - 2)²
3) factoriser (3X-2)-(8X+3)(3X-2)+(3X-2)²
(3x - 2) - (8x + 3)(3x - 2) + (3x - 2)² =1*(3x - 2) - (8x + 3)(3x - 2) + (3x - 2)(3x - 2)
= (3x - 2)[1 - (8x + 3) + (3x - 2)]
= (3x - 2)(1 - 8x - 3 + 3x - 2)
= (3x - 2)(-5x - 4)