Answer:
147+5fx
3
a+bx+c
Step-by-step explanation:
1 Since the power of 2 is even, the result will be positive.
3\times {7}^{2}+5fxa{x}^{2}+bx+c
3×7
2
+5fxax
2
+bx+c
2 Simplify {7}^{2}7
2
to 4949.
3\times 49+5fxa{x}^{2}+bx+c
3×49+5fxax
2
+bx+c
3 Simplify 3\times 493×49 to 147147.
147+5fxa{x}^{2}+bx+c
147+5fxax
2
+bx+c
4 Regroup terms.
147+5fx{x}^{2}a+bx+c
147+5fxx
2
a+bx+c
5 Use Product Rule: {x}^{a}{x}^{b}={x}^{a+b}x
a
x
b
=x
a+b
.
147+5f{x}^{1+2}a+bx+c
147+5fx
1+2
a+bx+c
6 Simplify 1+21+2 to 33.
147+5f{x}^{3}a+bx+c
147+5fx
3
a+bx+c
