If a=4, what is the value of $4 a^{2} - 7 a - 1$ $4a^2-7a-1$ ?

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If a=4, what is the value of $4 a^{2} - 7 a - 1$ $4a^2-7a-1$ ?

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Answer 1 · 2018-03-24T07:40:33

35

Explanation:

You have to replace a by 4.
[1] $4 \cdot 4^{2} - 7 \cdot 4 - 1$ $4*4^2-7*4-1$
[2] $4 \cdot 16 - 28 - 1$ $4*16-28-1$
[3] $64 - 29$ $64-29$
[4] $35$ $35$
\o/ here's the answer !

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If a=4, what is the value of $4 a^{2} - 7 a - 1$ $4a^2-7a-1$ ?

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If a=4, what is the value of $4 a^{2} - 7 a - 1$ $4a^2-7a-1$ ?