Question

Формула: a²-b² = (a-b)*(a+b)
Решите:
1)(c-d)*(c+d)=
2)100-x²=
3)(13+q)*(q-3)=
4)1+x²=
5)m2-4=

Answer 1

1)c^2-d^2<br />2) (10-x)(10+x)<br />3) 13q+q^2-39-3q=10q+q^2-39<br />4)???<br />5)(m-2)(m+2)

Answer 2

1) =c²-d²
2) =10²-x²=(10-x)(10+x)
3) =q²-3²=q²-9
4) =
5) =m²-2²=(m-2)(m+2)