Разложите на множители:
9а2-25b2
-81+25m2
0,16-х2
144-49n2
4c-49d2
x2y2-0,04
a2b2-c2
p2q2 - 4k2
9а2-25b2
-81+25m2
0,16-х2
144-49n2
4c-49d2
x2y2-0,04
a2b2-c2
p2q2 - 4k2
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Answers & Comments
-81+25m²=25m²-81=(5m-9)(5m+9)
0,16-х²=(0.4-x)(0.4+x)
144-49n²=(12-7n)(12+7n)
4c²-49d²=(2c-7d)(2c+7d)
x²y²-0,04=(xy-0.2)(xy+0.2)
a²b²-c²= (ab-c)(ab+c)
p²q² - 4k²=(pq-2k)(pq+2k)