2 years ago

5[x+1]+6=21 what is the solution

1 answer:

8 0

5x + 5 + 6 = 21
5x + 11 = 21
5x = 10
X = 2

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Juli2301 [7.4K]

Answer:

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1). solution

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kompoz [17]

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Step-by-step explanation:

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Delvig [45]

$f(x)=x^4+ax^2+b\\f'(x)=4x^3+2ax\\f''(x)=12x^2+2a\\f''(1)=12(1)^2+2a\\12(1)=-2a\\a=-6\\\\f(x)=x^4-6x^2+b\\(1)=(0)^4-6(0)^2+b\\b=1$

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3 years ago