Step-by-step explanation:
b. x²+6x+27
c.49x²-16
/\ /\
7 7 4 4
=(7x+4)(7x-4)
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Step-by-step explanation:
b. x²+6x+27
c.49x²-16
/\ /\
7 7 4 4
=(7x+4)(7x-4)