Question 1 (5 points) What is the solution to the system of equations? 3x +y = 4 2x + y = 5 (0, 4) Sof3 (-3, 12) (-3, 13) (-1,7)
1 answer:
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Answer:
(3x + 1)²
Step-by-step explanation:
Given
9x² + 6x + 1 ← is a perfect square of the form
(ax + b)² = a²x² + 2abx + b²
Compare like terms to find a and b
a²x² = 9x² ⇒ a² = 9 ⇒ a = = 3
b² = 1 ⇒ b = = 1
and 2ab = 2 × 3 × 1 = 6
Thus
9x² + 6x + 1 = (3x + 1)²