Question

Simplify 3x(4x-5) + 3 and find the values for (i) x=3, (ii) x= 1​

Answer 1

Answer:

3x(4x-5)+3

=3x*4x-5*3x+3

=12x^2-15x+3                   let this be equation no 1

Case 1:-put the value of x=3 in equation 1

=12(3)^2-15(3)+3

=12(9)-15(3)+3

=108-45+3

=63+3

=66

so the value of equation by putting x=3 is equal to 66

Case 2:-put the value of x=1 in equation no 1

=12(1)^2-15(1)+3

=12(1)-15(1)+3

=12-15+3

=-3+3

=0

so the value of equation by putting 1 is equal to 0

hope it helps mark as brainliest