2 years ago

Pls someone help me.

Mathematics

1 answer:

puteri [66]2 years ago

4 0

AB=EF

ABEF=ABF+AEF

NOW CONTINUES THE SOLUTION

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Solve the equation by factoring.

Delicious77 [7]

Factorizing an expression involves writing the expression in simpler forms

The values of z are $z = \frac 15$ or $z=4$

The equation is given as:

$5z^2 - 21z + 4 = 0$

Expand the equation

$5z^2 - 20z -z + 4 = 0$

Factorize the expression:

$5z(z - 4) -1(z - 4) = 0$

Factor out z - 4

$(5z - 1)(z - 4) = 0$

Split

$5z -1 = 0$ or $z - 4 = 0$

Solve for z

$z = \frac 15$ or $z=4$

Hence, the values of z are $z = \frac 15$ or $z=4$

Read more about factorization at:

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Step-by-step explanation:

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The first and last choices are the only ones whose angles total 180 degrees, so they're the only possible triangles.

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