Answer:
55.5
+24.21x³+73.79x²+33.81x+28.49
Explanation:
To simplify this equation, follow these steps:
(7.5x² +5.4x +3.7) (7.4x² -2.1x +7.7)
Multiply 7.5x² by all the terms in the right parenthesis.
7.5x² (7.4x² -2.1x +7.7)=55.5
- 15.75x³+ 57.75x²
Then multiply 5.4x by all the terms in the right parenthesis.
5.4x(7.4x²-2.1x+7.7)=39.96x³-11.34x²+41.58x
Now multiply 3.7 by all the terms in the right parenthesis.
3.7(7.4x²-2.1x+7.7)=27.38x²-7.77x+28.49
Add all of those answers together.
55.5
- 15.75x³+ 57.75x²+39.96x³-11.34x²+41.58x+27.38x²-7.77x+28.49=
=55.5
+24.21x³+73.79x²+33.81x+28.49
The answer is 55.5
+24.21x³+73.79x²+33.81x+28.49
Hope this helps!
If not, I am sorry.