Resolver las siguientes ecuaciones con parentesis A) 8( a + 2) = 9 B) 8(x - 3) = 24 C) - 4 (x - 6) = - 4 D) - 18 = 9 (d + 1) E) 6(b + 5) = 18 F) - 7 ( - 4 + h) = 21.
ax² + bx + c = 0
En resumen
<img src="https://tex.z-dn.net/?f=8%28%20a%2B2%29%3D9%5C%5C8a-8%2A2%3D9%5C%5C8a-16%3D9%5C%5C8a%3D9%2B16%5C%5C8a%3D25%5C%5Ca%3D%5Cfrac%7B25%7D%7B8%7D" />.
<img src="https://tex.z-dn.net/?f=8%28%20a%2B2%29%3D9%5C%5C8a-8%2A2%3D9%5C%5C8a-16%3D9%5C%5C8a%3D9%2B16%5C%5C8a%3D25%5C%5Ca%3D%5Cfrac%7B25%7D%7B8%7D" />.
A) x³ + 75 = 200 x³ = 200 - 75 x³ = 125 x = ³√125 x = 5 Rpta : 5 b)(x + 2)² = 81 x + 2 = √81 x + 2 = 9 x = 9 - 2 x = 7 Rpta : 7 c)√x - 3 = 6 x - 3 = 6² x - 3 = 36 x = 36 + 3 x = 39 Rpta : 39.
Y = x² - 3x + 2 - y = 5x - 10 ______________ x² - 8x + 12 Factorizando : (x - 6) (x - 2) Soluciones : x - 6 = 0 - - - > x = 6 ; x - 2 = 0 - - - - > x = 2 y = 20 y = 0.
Cuetro 4 . Por dos 2 es igual = a ocho 8.