Question

[5√7_√7) ×{4√7+8√7] -(19²) =​

Answer 1

Answer:

Step-by-step explanation:

= (35)*[12$\sqrt{7}$] - 361

=  420$\sqrt{7}$ - 361

Answer 2

Given:
=>[5root7-root7] x [ 4root7+8root7]-[19]^2
=>(4root7)x(12root7)-361
=>(48x7)-361
=>296-361
=>-65