Question

4a^2-b^2+6a^2-7b^2 find the value of a and b if a=-1,b=-3

Answer 1

Step-by-step explanation:

4a^2-b^2+6a^2-7b^2

a= -1

b=3

=4.-1^2-3^2+6.-1^2-7.3^2

=4+9+6-63

= -44