16 + 2 + 9 + 4 + 7 + 8 is
= 18 + 9 + 4 + 7 + 8
= 27 + 4 + 7 + 8
= 31 + 7 + 8
= 38 + 8
= 46
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144 9+7 = 16 and 9*16 = 144
144 9+7 = 16 and 9*16 = 144
sixteen minus fourteen times two times four divided by four plus seven 16 - 14 × 2 × 4 ÷ 4 + 7 = (16 - ((14 × 2 )× (4 ÷ 4))) + 7 = (16 - (28 × 1)) + 7 = (16 - 28) + 7 = -12 + 7 = -5.
Find factors of 16 which add to 8: Factors of 16 are 1 & 16, 2 & 7 and 4 & 4: Only the last add to 8 so: (x + 4)(x + 4) or (x + 4)2
You can get it to vertex form by completing the square: y = x2 + 7x + 4 ∴ y = x2 + 7x + (7/2)2 - (7/2)2 + 4 ∴ y = (x + 7/2)2 - 49/4 + 16/4 ∴ y = (x + 7/2)2 - 33/4