Answer:
4
Explanation:
hope this helps!
4(9 + 4)
36 = 2 * 2 * 3 * 3
16 = 2 * 2 * 2 * 2
GCF = 2*2 = 4
36 = 4 * 9
16 = 4*4
36 +16 = 4*9 + 4*4 = 4( 9 + 4)
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