mn làm hộ mik vs ak mik đg cần gấp lắm Cảm ơn mn trước nha

Question

mn làm hộ mik vs ak
mik đg cần gấp lắm
Cảm ơn mn trước nha
mn-lam-ho-mik-vs-ak-mik-dg-can-gap-lam-cam-on-mn-truoc-nha

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Ladonna 4 years 2020-11-24T16:49:24+00:00 1 Answers 52 views 0

Answers ( )

  1. Orla
    0
    2020-11-24T16:50:59+00:00
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    Giải thích các bước giải:

    Ta có:

    9,O=(1x–1+1x+1).x–12=(x+1)+(x–1)(x–1)(x+1).x–12=2x(x–1)(x+1).x–12=xx+110,I=(xx–4+1x–2):2x–2=(x(x–2)(x+2)+1x–2).x–22=(x+(x+2)(x–2)(x+2)).x–22=2x+2(x–2)(x+2).x–22=x+1x+211,J=(xx–9–1x+3):(1x–3–1x)=(x(x–3)(x+3)–1x+3):x–(x–3)(x–3).x=x–(x–3)(x–3)(x+3):3x(x–3)=3(x–3)(x+3).x(x–3)3=xx+312,P=x+1x–1–x+2xx–1–x+1x+x+1=x+1(x–1)(x+1)–x+2(x–1)(x+x+1)–x+1x+x+1=1x–1–x+2(x–1)(x+x+1)–x+1x+x+1=(x+x+1)–(x+2)–(x+1)(x–1)(x–1)(x+x+1)=x+x+1–x–2–x+1(x–1)(x+x+1)=–x+x(x–1)(x+x+1)=–xx+x+1

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