Question

simplify 6x(3x-5 and find its value a+x3​

Answer 1

Explanation:

(a)x=3

=3x3(4x3-5)+3

=9(12-5)+3

=9x7+3

=63+3

=66

(b)x=1/2

=3x1/2(4x1/2-5)+3

=3/2(2-5)+3

=3/2x(-3)+3

=(-9/2)+3

=(-9+6)/2

=(-3/2)