A) $x²+ 7x+10=0$ $ \Delta=b²-4.0.6 $ $\Delta=(7)²-4.1.10$ $ ...

A) $x²+ 7x+10=0$ $\Delta=b²-4.0.6$ $\Delta=(7)²-4.1.10$ \Delta=49+40 \Delta=49 X=\frac{-b± \sqrt{\Delta}}{2.a} X=-(-7)± \sqrt{9} X=\frac{+7±}{} $B)$ x²-6x+9=0$

C) $2x²-5x-3=0$ $A=-b ± \sqrt{(b²-4ac)}/2$ $A=[5±\sqrt{((5)²-4.2.3)}$ $A=(25+24)1$ $A=49$ $X=\frac{-b± \sqrt{4}}{}$ $X=\frac{-b± \sqrt{(25+26)4}}{}$ $X=\frac{[5+\sqrt{49}14}{}$ $X=\frac{[5+77/4}{}$ D) $x²-7x+6=0$

$A) $x²+ 7x+10=0$ $ \Delta=b²-4.0.6 $ $\Delta=(7)²-4.1.10$ $ $\Delta=49+40 $ $\Delta=49 $ $X=\frac{-b± \sqrt{\Delta}}{2.a}$ $ X=-(-7)± \sqrt{9}$ $ X=\frac{+7±}{}$ B)$x²-6x+9=0$ C)$2x²-5x-3=0$ $ A=-b ± \sqrt{(b²-4ac)}/2$ $ A=[5±\sqrt{((5)²-4.2.3)}$ $ A=(25+24)1$ $ A=49$ $ X=\frac{-b± \sqrt{4}}{}$ $ X=\frac{-b± \sqrt{(25+26)4}}{}$ $ X=\frac{[5+\sqrt{49}14}{}$ $ X=\frac{[5+77/4}{}$ D)$x²-7x+6=0$$

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