Answer:
=9x2 + 48x + 64
Explanation:
(3x+8)2
=(3x+8) (3x+8)
=(3x)(3x) + (3x) (8) + (8) (3x) + (8) (8)
=9x2 + 24x + 24x + 64
=9x2+48x+64
=(3x+8)(3x+8)
=(3x)(3x)+(3x)(8)+(8)(3x)+(8)(8)
=9x2+24x+24x+64
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