Question

(3+4√7) (3-4√7) simplify​

Answer 1

$(3+4√7) (3-4√7) \\ ( {3}^{2} - {(4 \sqrt{7}) }^{2} ) \\ (9 - (16 \times 7)) \\ (9 - 112) = -103$

Answer 2

Step-by-step explanation:

(3+4√7) (3-4√7)

as it in the form (a+b) (a-b)=a^2-b^2

then,

=(3^2-(4√7)^2)

=9-16x7

=-103