The first few steps in deriving the quadratic formula are shown. a table listing the first few steps in deriving the quadratic formula which best explains why is not added to the left side of the equation in the last step shown in the table? the term startfraction b squared over 4 a squared endfraction is added to the right side of the equation, so it needs to be subtracted from the left side of the equation to balance the sides of the equation. the distributive property needs to be applied to determine the value to add to the left side of the equation to balance the sides of the equation. the term startfraction b squared over 4 a squared endfraction needs to be converted so it has a common denominator before adding it to the left side of the equation to balance the equation. the square root of the term needs to be found before adding the term to the left side of the equation to balance the sides of the equation.

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step-by-step explanation:

step-by-step explanation:

for the free

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west

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step-by-step explanation: