Question

63a^3 + a^2 - 12a + 8 solve it☹️☹️☹️✍️✍️​

Answer 1

$63 {a}^{3} + {a}^{2} - 12a + 8$

$= a(63 {a}^{3} + a - 12) + 8$

$= a(a(63a + 1) - 12) + 8$

$= 63(a + \frac{1}{189} ) ^{3} - \frac{2269}{189} (a + \frac{1}{189} ) + \frac{864110}{107163}$

$= - 0.63328$

Answer 2

Answer:

63a^3 + a^2 - 12a + 8 = 0.63328 ....