Answer:
A. 26i
B. 36i^2 + 60x + 25
C. 64x^2 + 112x + 49
Step-by-step explanation:
To get answer in question A, B, and C, use FOIL method
FOIL Method:
[tex](a + b)(c + d) = ac + ad + bc + bd[/tex]
(pretend x is i)
Question A:
[tex](6 + 4x)(2 + 3x) \\ 12 + 18x + 8x - 12 \\ 26x[/tex]
Question B:
[tex](5 + 6x)(5 + 6x) \\ {(5 + 6x)}^{2} = {36x}^{2} + 60x + 25[/tex]
Question C
[tex](7 + 8x)(7 + 8x) \\ {64x}^{2} + 112x + 49[/tex]
