Exercise 1.1.15 Find a quadratic a+bx+cx² such that the graph of y = a+bx+cx² contains each of the points (-1, 6), (2, 0), and (3, 2).

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A: 12. Compute f(g(4)) Given:  ∙ f(x)=2x+3​∙ g(x)=x2+5 Step 1: Evaluate g(4)g(4)=42+5=16+5=21 Step 2:…

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A: We are asked with finding the exact value of cos(A + B) given: ∙ sinA=−32​ and π≤A≤23π​∙ cosB=73​…