Question

$( 7\sqrt{2} + 11)(7 \sqrt{2} - 11)$
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Answer 1

Step-by-step explanation:

$(7 \sqrt{2} + 11)(7 \sqrt{2} - 11) \\ ({7 \sqrt{2}) }^{2} - ({11})^{2} \\ 98 - 121 \\ - 23$

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Answer 2

Answer:

-23

Step-by-step explanation:

Question:

Value of $( 7\sqrt{2} + 11)(7 \sqrt{2} - 11)$

Identity Used:

(a+b) (a-b) = a² - b²

Solution:

$(7 \sqrt{2} + 11)(7 \sqrt{2} - 11) \\ = {(7 \sqrt{2} )}^{2} - {(11)}^{2} \\ = 98 - 121 \\ = - 23$

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