3 years ago

X= solve the following x^2-2x-24=0 x^2-11x+18=0

Mathematics

1 answer:

BigorU [14]3 years ago

6 0

The first picture shows solution for a. For b). X=9,2

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A pound of chocolate costs 8 dollars. Kelsha buys p pounds. Write an equation to represent the total cost c that Keisha pays.

mote1985 [20]

The equation would be 8 times the amount of pounds bought equals the amount paid.

<h2>Answer:</h2>

8p = c

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Rationalize the denominator of square root of negative 9 over open parentheses 4 minus 7 i close parentheses minus open parenthe

svetlana [45]

First we combine the parenthesis to get 9/(-2-i) then we multiply both the numerator and the denomenator by the conjugate of -2-i (whic is -2+i) to get (-18+9i)/5

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<img src="https://tex.z-dn.net/?f=4x%20%7B%7D%5E%7B2%7D%20%20%2B%2020x%20%2B%2025" id="TexFormula1" title="4x {}^{2} + 20x + 25

BigorU [14]

$\sf{\qquad\qquad\huge\underline{{\sf Answer}}}$

Let's Solve ~

$\qquad \sf \dashrightarrow \: 4 {x}^{2} + 20x + 25$

$\qquad \sf \dashrightarrow \: 4 {x}^{2} + 10x + 10x + 25$

$\qquad \sf \dashrightarrow \: 2x(2x + 5) + 5(2x + 5)$

$\qquad \sf \dashrightarrow \: (2x + 5) (2x + 5)$

$\qquad \sf \dashrightarrow \: (2x + 5) {}^{2}$

$\sf{\qquad \sf \dashrightarrow \: 4x² + 20x + 25 }$

$\sf{\qquad \sf \dashrightarrow \: (2x)² + (2 \sdot 2x \sdot 5) + (5)²}$

[ it's similar to expression - a² + 2ab + b² that is equal to (a + b)² ]

so, let's use this identity here to factorise :

$\sf{\qquad \sf \dashrightarrow \: (2x + 5)²}$

I hope it was helpful ~

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True of false? the slope of thia equation is zero <br>y=x+5<br>

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Answer:

false

Step-by-step explanation:

no solution

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10 times 90 is 900, and divided by -19 is -900/19.

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