Answer:
b^2
Step-by-step explanation:
(3b-4b)^2
=(-b)^2
we know that,
- * - =+
minus(-) * minus(-) = +
By using formula to the f
given equation is;
( 3b - 4b ) ²
We know that,
(a-b)^2 =a^2-2ab+b^2
Soo,
=9b^2 - 2*3b*4b +16b^2
=9b^2-2*3*4b^2+16b^2
=9b^2+16b^2-24b^2
=25b^2-24b^2
=b^2