Question

questions from 9 to ahead

Answer 1

ANSWER 10 ==>

x - 1 is a factor of 4x^3 + 3x^2 -4x +k

then x=1 is one root of 4x^3 + 3x^2 -4x +k

put x= 1

4x^3 +3x^2 -4x +k = 0

=> 4 (1)^3 +3 (1)^2-4 (1) +k =0

=> 4 + 3 - 4 + k = 0

=> k = -3

ANSWER = 11

(0,3) ;( 1,7) ; (2,11)

ANSWER = 12

S=  10+12+18/2 ==> 40/2 => 20

S = √20 ×√20-10 ×√20-12 ×√20-18

=> √20×√10×√8×√2

==> √2×2×5×5×2×2×2×2×2

==>  2×2×2×5√2

==> 40√2