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Masa0408
@Masa0408
June 2022
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Помогите решить)Очень надо)
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isaevaelenka
(d+7)²=d²+14d+49
(2y-3)(2y+3)=4y²-9
(a-6)²-(36+7a)=a²-12a+36-36-7a=a²-19a
p²-9=(p-3)(p+3)
81y²-18yx+x²=(9y-x)²=(9y-x)(9y-x)
(2-c)²-c(c+6)=54
4-4c+c²-c²-6c=54
-10c=54-4
-10c=50
c=50/(-10)
c= - 5
(a²-7d)(7d+a²)=a⁴-49d²
(t²-6t)²=t⁴-12t³+36t²
(t-f)²(t+f)²=t⁴-f⁴
16a²c²-36y²=(4ac-6y)(4ac+6y)
16y²-(y+5)²=(4y+y+5)(4y-y-5)=(5y+5)(3y-5)
64c³+m³=(4с+m)(16c²-4cm+m²)
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isaevaelenka
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Answers & Comments
(2y-3)(2y+3)=4y²-9
(a-6)²-(36+7a)=a²-12a+36-36-7a=a²-19a
p²-9=(p-3)(p+3)
81y²-18yx+x²=(9y-x)²=(9y-x)(9y-x)
(2-c)²-c(c+6)=54
4-4c+c²-c²-6c=54
-10c=54-4
-10c=50
c=50/(-10)
c= - 5
(a²-7d)(7d+a²)=a⁴-49d²
(t²-6t)²=t⁴-12t³+36t²
(t-f)²(t+f)²=t⁴-f⁴
16a²c²-36y²=(4ac-6y)(4ac+6y)
16y²-(y+5)²=(4y+y+5)(4y-y-5)=(5y+5)(3y-5)
64c³+m³=(4с+m)(16c²-4cm+m²)