Question

1)-0,7(-10)⁴-8•(-10)²-26=
Решите хоть сколько
2)(√32-3)²

3)x²+4x=21

Answer 1

1) -0.7 × (-10)^4 - 8 × (-10)^2 -26 = -0.7 × 10000 - 8 × 100 - 26 = -7000-800-26=-7826

2)(√32-3)² = 32 - 6√32 +9 = 41 -6√32

3) x^2 +4x -21=0

x1 = -7. x2 = 3