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Gnom [1K]
3 years ago
9

What is the value of the expression below when z = 2? 4z2 – 3z – 4​

Mathematics
2 answers:
zhenek [66]3 years ago
8 0

Answer:

<h2>6</h2>

Step-by-step explanation:

4z^2 - 3z - 4​\\z =2

Substitute 2 for z in the given equation

4(2)^2 - 3(2) -4\\

Follow the PEMDAS order of operations

\mathrm{Calculate\:exponents}\:\left(2\right)^2\::\quad 4\\=4\cdot \:4-3\left(2\right)-4\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:4\times\:4\::\quad 16\\=16-3\left(2\right)-4\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:3\left(2\right)\::\quad 6\\=16-6-4\\\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:16-6-4\::\quad 6

baherus [9]3 years ago
3 0

Answer:

Step-by-step explanation:

Plug in z = 2 in the expression

4z² - 3z - 4 = 4*2² - 3*2 -4

                 = 4*4 - 6 - 4

                 = 16 - 6 - 4

                 = 10 - 4

                 = 6

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<img src="https://tex.z-dn.net/?f=%28-5x%5E3%29%5E3%2F%2810x%5E5%29%5E2" id="TexFormula1" title="(-5x^3)^3/(10x^5)^2" alt="(-5x^
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Step-by-step explanation:

<h2>\left(-5x^3\right)^3\div \left(10x^5\right)^2</h2><h2>\frac{-5^3x^9}{\left(10x^5\right)^2}</h2><h2>\frac{-5^3x^9}{10^2x^{10}}</h2><h2>\frac{-5^3x^9}{5^2\cdot \:2^2x^{10}}</h2><h2>\frac{-5x^9}{2^2x^{10}}</h2><h2>\frac{-5}{2^2x}</h2>

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- hope it helps! -

<h2 />

3 0
1 year ago
G(x)=x^3-3x^2 ; Find g(2)
monitta
I hope this helps you




x=2


g (2)=2^3-3.2^2


g (2)=8-3.4


g (2)=8-12


g (2)=-4
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