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Solution:
Given equation 8x2 - 50
= 2(4x2 - 25)
= 2((2x)² - 5² )
We know that a² - b² = (a + b)(a - b)
= 2(2x + 5)(2x - 5)
2(2x + 5)(2x - 5) is the completely factored form of 8x2 - 50
Summary:
2(2x + 5)(2x - 5) is the completely factored form of 8x2 - 50