[Toán 7] Tính

K

kid57_1999

P(x)=3^6x+2^4x-6^3x+x-1
Q(x)=2^5x-x^4+x-3x+4

Thì P(x)-Q(x)= 3^6x+2^4x-6^3x+x-1-2^5x+x^4-x+3x-4
= 3^6x-2^5x+2^4x-6x^3x+(x+3x-x)-(4+1)
=3^6x -2^5x+2^4x-6^3x-x^4+3x-5

Nếu đúng thì cảm ơn mình nha
 
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