Ne6mmhearSeg0enicole Ne6mmhearSeg0enicole

24-05-2016
Mathematics

Answered

2.)Which is a solution to the equation?

(x −2)(x + 5) = 18

x = −10

x = −7

x = −4

x = −2

Verified Answer :

whiskeyo whiskeyo

24-05-2016

\((x-2)(x+5) = 18\\ x^{2}-2x+5x-10=18\\ x^{2}+3x-28=0\\ delta=3^{2}-4*1*(-28)=9+112=121\\ x_{1/2}= \frac{-3+11}{2}/ \frac{-3-11}{2}=4/-7\)

So the answer is -7=x

Answer Link

someoneunknown10 someoneunknown10

25-06-2020

Answer:

x=-7

Step-by-step explanation: it's B on edg

Answer Link

Related Questions

what adds to 10 and multiplies to 11

Which of the following is not a characteristic of a perfectly competitive firms demand curve i it lies above the firms marginal revenue curve ii it is perfectly

Desert tender grassland and chaparral are examples of found in North America Ariver systems Bindustries Cecosystems Dplateaus and basins

A thermometer measures its own temperature What does it mean

why is it important to avoid the overuse of the word i in an autobiographical piece

Identify this symbol Al3

A mirror like copy of DNA called moves from the nucleons to the ribosome

Regular aerobic exercise gives an individual more endurance is a sentence that shows cause and effect Which word indicates the cause A Regular B Individual C En

In a republic public policy best reflects the ideals and policy priorities of theA majority of votersB minority of votersC political party in powerD chief execu

Which of the following is NOT a form of irony A dramatic B chronological C cosmic D verbal

Web Analytics