¿ayuda con estos ejercicios?
(ax+1 – 2bx-1)( 2bx-1 + ax+1)
(a – 11)(a + 10)
(x3 + 7)( x3 + 6)
(2m + 9) (2m – 9)
(a + 1)(a + 2)(a – 1)(a – 2)
(10x3 – 9xy5)2
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(ax+1 – 2bx-1)( 2bx-1 + ax+1)
(a – 11)(a + 10)
(x3 + 7)( x3 + 6)
(2m + 9) (2m – 9)
(a + 1)(a + 2)(a – 1)(a – 2)
(10x3 – 9xy5)2
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Verified answer
(ax+1 – 2bx-1)( 2bx-1 + ax+1)
[(ax+1) . (2bx-1)] + [(ax+1) . (ax+1)] - [(2bx-1) . (2bx-1)] - [(2bx-1) . (ax+1)]
Ahora simplificamos:
[(ax+1) . (2bx-1)] + (ax+1)² - (2bx-1)² - [(2bx-1) . (ax+1)]
Los primeros 2 corchetes se simplifican porque uno es positivo y el otro negativo:
(ax+1)² - (2bx-1)²
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(a – 11)(a + 10)
(a . a) + 10a - 11a - (11 . 10)
a² + 10a - 11a - 110
a² - a -110
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(2m + 9) (2m – 9)
(2m . 2m) - (2m . 9) + (9 . 2m) - (9 . 9)
2m² - 81
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