Answer:
C) [tex]9x^2+24x+16[/tex]
Step-by-step explanation:
[tex]\left(3x+4\right)^2[/tex]
Use Perfect Square Formula :
[tex]\left(a+b\right)^2=a^2+2ab+b^2[/tex]
[tex]\left(3x\right)^2+2\cdot \:3x\cdot \:4+4^2[/tex]
[tex]9x^2+24x+16[/tex]
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