The simplified value of (2x + 5)² - (2x - 5)²
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Answer:
40x
Step-by-step explanation:
Here, we will use this identity :- a^2 - b^2 = (a + b) (a - b)
a = 2x + 5 & b = 2x - 5
(2x + 5)^2 - (2x - 5)^2
= (2x + 5 + 2x - 5) (2x + 5 - 2x + 5)
= 4x × 10
= 40x
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