Question

factories x2+2x-342=0


if your answer is deserving then I will mark it as brainliest​

Answer 1

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${x}^{2} + x - 342$

${x}^{2} + 19x - 18x - 342 \\ x(x + 19) - 18(x + 19)$

$(x - 18)(x + 19) = 0$

$x - 18 = 0 \\ x = 18$

And

$x + 19 = 0 \\ x = - 19$

Ans....

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#2% valle

Answer 2

Answer:

16.52

Step-by-step explanation:

using the formula method which is -b +or - √b²-4ac/2a

a=1, b=2, c=-342

-2 +or- √2²-4*1*-342/2*1

-2 +or- √4+1368 /2

-2 +or- √1372 /2

-2 +or- 14√7 /2

-2 +or- 7√7

-2 +-7√7             or -2 - -7√7

-2-7√7                or 2+7√7

= -20.52              or 16.52

so your answer is always the positive number which is 2+7√7 in surd form or 16.52 in decimal.