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2 years ago

Select the two values of x that are roots of this equation. 3x-5=2x^2

Mathematics

2 answers:

Korolek [52]2 years ago

7 0

Solution:

3x - 5 = -2x²

2x² + 3x - 5 = 0

By splitting the middle term,

2x² - 2x + 5x - 5 = 0

2x (x - 1) + 5 (x - 1) = 0

(2x + 5)(x - 1) = 0

So, 2x + 5 = 0

x = -5/2

(OR)

x - 1 = 0

x = 1

The roots of 2x² + 3x - 5 = 0 are: A. x = 1 & B. x = -5/2

wlad13 [49]2 years ago

4 0

Step-by-step explanation:

$3x - 5 = - {2x}^{2}$

➡

${2x}^{2} + 3x - 5 = 0$

(2x+5)(x-1) = 0

one of these multiple should be 0 so the equation is equal to 0

therefore if 2x + 5 = 0 then

x = -5/2

and if x+1 = 0 then

x = 1

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Alisiya [41]

Answer:

Pierre has enough boards and nails to make 9 tables and 5 chairs.

Step-by-step explanation:

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Please help me with this

Tatiana [17]

<h2>Given :</h2>

The given equations are :

$\longrightarrow15b + 10g = 8640 \: \: \: \: \: - (1)$

$\longrightarrow b + g = 708 \: \: \: \: \: \: - (2)$

Let's solve for g in equation (2) :

$\longrightarrow b + g = 708$

$\longrightarrow g = 708 - b \: \: \: \: \: - (3)$

now, let's plug value of g from equation (3) into equation (1) :

$\longrightarrow15b + 10g = 8640$

$\longrightarrow15b + 10(708 - b) = 8640$

$\longrightarrow15b - 10b + 7080 = 8640$

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plugging value of b in equation (3) :

$\longrightarrow g = 708 - b$

$\longrightarrow g = 708 - 312$

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since " g " represents ground seats, number of ground seats :

=》396

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saveliy_v [14]

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Select the two values of x that are roots of this equation. 3x-5=2x^2​

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