(y+2) (y-3) (y-7) (y-2) +64
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Answer:
={(y-2)(y-3)}{(y+2)(y-7)}+64
={(y-2)(y-3)}{(y+2)(y-7)}+64=(y^2-5y+6)(y^2-5y-14)+64
={(y-2)(y-3)}{(y+2)(y-7)}+64=(y^2-5y+6)(y^2-5y-14)+64let y^2-5y=a
={(y-2)(y-3)}{(y+2)(y-7)}+64=(y^2-5y+6)(y^2-5y-14)+64let y^2-5y=athen,
={(y-2)(y-3)}{(y+2)(y-7)}+64=(y^2-5y+6)(y^2-5y-14)+64let y^2-5y=athen,(a+6)(a-14)+64
={(y-2)(y-3)}{(y+2)(y-7)}+64=(y^2-5y+6)(y^2-5y-14)+64let y^2-5y=athen,(a+6)(a-14)+64=a^2+6a-14a-84+64
={(y-2)(y-3)}{(y+2)(y-7)}+64=(y^2-5y+6)(y^2-5y-14)+64let y^2-5y=athen,(a+6)(a-14)+64=a^2+6a-14a-84+64=a^2-8a-20
={(y-2)(y-3)}{(y+2)(y-7)}+64=(y^2-5y+6)(y^2-5y-14)+64let y^2-5y=athen,(a+6)(a-14)+64=a^2+6a-14a-84+64=a^2-8a-20=a^2-10a+2a -20
={(y-2)(y-3)}{(y+2)(y-7)}+64=(y^2-5y+6)(y^2-5y-14)+64let y^2-5y=athen,(a+6)(a-14)+64=a^2+6a-14a-84+64=a^2-8a-20=a^2-10a+2a -20=a(a-10)+2(a-10)
={(y-2)(y-3)}{(y+2)(y-7)}+64=(y^2-5y+6)(y^2-5y-14)+64let y^2-5y=athen,(a+6)(a-14)+64=a^2+6a-14a-84+64=a^2-8a-20=a^2-10a+2a -20=a(a-10)+2(a-10)=(a-10)(a+2)
={(y-2)(y-3)}{(y+2)(y-7)}+64=(y^2-5y+6)(y^2-5y-14)+64let y^2-5y=athen,(a+6)(a-14)+64=a^2+6a-14a-84+64=a^2-8a-20=a^2-10a+2a -20=a(a-10)+2(a-10)=(a-10)(a+2)putting the value of a
={(y-2)(y-3)}{(y+2)(y-7)}+64=(y^2-5y+6)(y^2-5y-14)+64let y^2-5y=athen,(a+6)(a-14)+64=a^2+6a-14a-84+64=a^2-8a-20=a^2-10a+2a -20=a(a-10)+2(a-10)=(a-10)(a+2)putting the value of a(y^2-5y-10)(y^2-5y+2)