Question

2. упростите выражение: а.
1-(3√7-8)x(3√7+8)

Answer 1

$1-(3\sqrt{7}-8)\cdot(3\sqrt{7}+8)=1-((3\sqrt{7})^2-8^2)= \\\ =1-(3^2\cdot7-64)=1-(63-64)=1-(-1)=1+1=2$

Answer 2

1 - (9 * 7 - 64) = 1 - (63 - 64) = 1 - ( -1) = 1 + 1 = 2