Question

simplify
$(7 + 4 \sqrt{3} )(7 - 4 \sqrt{3} )$
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Answer 1

Step-by-step explanation:

Given that :-

(7+4√3)(7-4√3)

This is in the form of (a+b)(a-b)

Here a=7 and b=4√3

(a+b)(a-b)=a^2-b^2

(7+4√3)(7-4√3)=7^2-(4√3)^2

=>49-48

=>1

(4√3^2=4√3×4√3=16×3=48)

(7+4√3)(7-4√3) = 1

Answer 2

Answer:

7 + 4square root 3 = 13.92820323

7 -  square root 3 = -1.92820323

Answer is -13.92820323

Step-by-step explanation:

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