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2 years ago

8

Simplify the expression z^2-z(z+3)+3z

2 answers:

Alisiya [41]2 years ago

5 0

<span>z^2-z(z+3)+3z

z^2 - z^2 - 3z + 3z

0 + 0

0

</span><span>z^2-z(z+3)+3z = 0</span>

fiasKO [112]2 years ago

3 0

$z^2-z(z+3)+3z$

$z^2-z^2-3z+3z
$

$-3z+3z$

$0$ $\text{Solution}$

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Step-by-step explanation:

The figure has been attached, to complement the question.

$DE = 52$

$FC = 15$

$HE = 14$

Given that J is the centroid, it means that J divides sides CD, DE and CE into two equal parts respectively and as such the following relationship exist:

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$CH = HE$

$DG = GE$

Solving (a): DG

If $DG = GE$ , then

$DE = DG + GE$

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Make DG the subject

$DG = \frac{1}{2}DE$

Substitute 52 for DE

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Solving (c): DF

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