Question

Simplify (5√7 +4√11) (5√7 -4√11
)

Answer 1

Answer:

-1

Step-by-step explanation:

using formulae

(x+y)(x-y)=$x^2$-$y^{2}$

(5√7 ) (5√7 -4√11 )

$(5\sqrt{} 7)^{2}$-$(4\sqrt{} 11)^{2}$

(25*7)-(16*11)

175-176

-1 ans