Question

Find
a) 5x = (45²) – (40)²​

Answer 1

Answer:

x = 85

Step-by-step explanation:

$5x = {45}^{2} - {40}^{2} \\ = )5x = 2025 - 1600 \\ = )5x = 425 \\ = )x = \frac{425}{5} \\ = )x = 85$

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Answer 2

Answer:

value of x =85

Step-by-step explanation:

• 5x=(45*2)-(40*2)
• 5x=(45+40)(45-40)
• 5x=(85)(5)
• 5x=(425)
• x=425/5
• x=85