Question

Q.6 - Find 6412 or find 321/5
Q.7 - Find 913
or find 1634
Q.8 - Simplify 712.812 or 1712 + 1714
Q.9 - Find the zero of p(x) = x+5​

Answer 1

f(x) = (2x4 + 9x3 + 6x2 – 11x – 6)

By the Factor Theorem, (x – 1) will be a factor of f(x) if f(1) = 0.

Here, f(1) = 2 × 14 + 9 × 13 + 6 × 12 – 11 × 1 – 6

= 2 + 9 + 6 – 11 – 6

= 17 – 17 = 0

∴ (x – 1) is factor of (2x4 + 9x3 + 6x2 – 11x – 6).