Question

Помогите плиз
1) 100-g²=
2) 196p²-r²=
3) 25x²-289y²=
4) a²b⁴-9c²=
5) (m-1)²-121=

вот пример
m²-81=m²-9²=(m-9)(m+9)

Answer 1

$100-g^2=10^2-g^2=(10-g)(10+g)\\196p^2-r^2=(14p)^2-r^2=(14p-r)(14p+r)\\25x^2-289y^2=(5x)^2-(17y)^2=(5x-17y)(5x+17y)\\a^2b^4-9c^2=(ab^2)^2-(3c)^2=(ab^2-3c)(ab^2+3c)\\(m-1)^2-121=(m-1)^2-11^2=(m-1-11)(m-1+11)=\\=(m-12)(m+10)$