Question

5z² - 80 is equal to​

Answer 1

Answer:

5z^2=80

z^2=80\5

z^2=16

z=4

Step-by-step explanation:

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Answer 2

Given:

• 5z² = 80

To Find:

• it's value

Solution:

$: ⟹ \sf5z² = 80 \\ \\ : ⟹ \sf {z}^{2} = \cancel\frac{80}{5} \\ \\ : ⟹ \sf {z}^{2} = 16 \: \: \: \\ \\ : ⟹ \sf \: z = \sqrt{16} \\ \\ : ⟹ \sf \: z = 4 \: \: \: \: \: \: \:$

$\blue{ \underline{ \boxed{ \pink{ \mathfrak{ \therefore \: value \: of \: z = 4}}}}}$

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