Ответ:
1) x^4-10x^2+25=(x^2)^2-2x^2*5+5^2=(x^2-5)^2
2) b^4-6b^2+9=(x^2)^2-2b^2*3+3^3=(b^2-3)^2.
Формулы:
(a-b)^2=a^2-2ab+b^2
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Ответ:
Verified answer
1) x^4-10x^2+25=(x^2)^2-2x^2*5+5^2=(x^2-5)^2
2) b^4-6b^2+9=(x^2)^2-2b^2*3+3^3=(b^2-3)^2.
Формулы:
(a-b)^2=a^2-2ab+b^2