Answer:
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Move all terms to one side
4w^2 + 49 + 28w = 0
Rewrite 4w^2 + 49 + 28w in the form a^2 + 2ab + b^2, where a = 2w and b = 7
(2w)^2 + 2(2w)(7) + 7^2 = 0
Use the Square of Sum: (a + b)^2 = a^2 + 2ab + b^2
(2w + 7)^2 = 0
Take the square root of both sides
3w + 7 = 0
Subtract 7 from both sides
2w = -7
Divide both sides by 2
<u>w = -7/2</u>
The answer is 60. think of it like this. the square root of 36 is six and 2 zeros halved is 1 zero so yes, it's 60
Total 100 pts 28 questions
20 Multiple choice questions (3 pts 20x3= 60)
8 Short answer questions (5 pts 8x5=40)
