Respuesta :
difference of perfect squares is a² - b² = (a+b)(a-b)
Here, we can let 23 = a and 17 = b, so using this method, we have
23² - 17² = (23+17)(23-17) = 40 × 6 = 240
So third option is correct.
Here, we can let 23 = a and 17 = b, so using this method, we have
23² - 17² = (23+17)(23-17) = 40 × 6 = 240
So third option is correct.
Answer:
Your answer is 23^2 − 17^2 = (23 + 17)(23 − 17) = (40)(6) = 240, or C on your answer sheet.
Step-by-step explanation:
Lets begin!
So when a binomial is composed of two perfect squares separated by a subtraction symbol, a certain method called the difference of perfect squares can be used. The difference of perfect squares method can be done by multiplying the sum and difference of the two square roots.
So, to solve:
23^2 - 17^2 = (23 + 17)(23-17) = (40)(6) = 240
Thus being your answer.
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