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Maths-

General

Easy

Question

Find the area of a square field with side (5𝑥 − 8).

hint Hint:

Area of square is given by (side)2.

Area of square = (a)2

Identity: (a – b)2 = a2 – 2ab + b2

The correct answer is: Hence, area of square field is 25x2 – 80x + 64 sq. units.

Answer

Step by step explanation:

Given:

Side (a) = (5x – 8) units.

Step 1:

Calculate the area of square field,
Area = (5x – 8)²
As,
(a – b)² = a² – 2ab + b²
Therefore,
Area = (5x)² – 2(5x) (8) + (8)²
Area = 25x² – 80x + 64 sq. units.

Final Answer:

Hence, area of square field is 25x² – 80x + 64 sq. units.

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