2 years ago

PLEASE HELP

Mathematics

1 answer:

Fynjy0 [20]2 years ago

3 0

Answer:

6,346

Step-by-step explanation:

add add multiply and add

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adell [148]

A)
$x+3$

b)
$x(x+3)=340\\
x^2+3x-340=0$

c)
$x(x+3)=340\\ x^2+3x-340=0\\
\Delta=3^2-4\cdot1\cdot(-340)=9+1360=1369\\\sqrt{\Delta}=37\\
x_1=\dfrac{-3-37}{2}=-20\\
x_2=\dfrac{-3+37}{2}=17$

It's 17.

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Step-by-step explanation:

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