Question

4класс решить уравнения b*b+9=34 и (y-3)*(4-y)=0

Answer 1

b*b+9 = 34
b² = 34-9
b² = 25
b = +-5

(y-3)(4-y)=0
y-3 = 0   y = 3
4-y = 0   y = 4