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Owlonthewindow
@Owlonthewindow
July 2022
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Помогите пожалуйста с выражением из 7 (фото).
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m11m
(4q-3)²-(7-2q)²=(4q-3-(7-2q))(4q-3+7-2q)=(4q-3-7+2q)(2q+4)=
=(6q-10)(2q+4)=2(3q-5)*2*(q+2)=4(3q-5)(q+2)
При q=-1.5:
4(3*(-1,5)-5)(-1,5+2)=4(-4,5-5)*0,5=2*(-9,5)=-19
Ответ: -19
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Owlonthewindow
спасибо!
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Answers & Comments
=(6q-10)(2q+4)=2(3q-5)*2*(q+2)=4(3q-5)(q+2)
При q=-1.5:
4(3*(-1,5)-5)(-1,5+2)=4(-4,5-5)*0,5=2*(-9,5)=-19
Ответ: -19