What is the area of a square if the length of each side is (5x + 3) units?
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25x² + 9 + 30x
Step-by-step explanation:
Given side = (5x + 3)
Area of square = side²
= (5x + 3)²
by using the formula (a + b)² = a² + b² + 2ab
where a = 5x and b = 3
Now;
Area of square = (5x + 3)²
= (5x)² + (3)² + 2(5x)(3)
= 25x² + 9 + 30x (required answer)
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