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My name is Ann [436]
3 years ago
8

Solve by factoring or finding square roots x^2-18x-40=0

Mathematics
2 answers:
irina1246 [14]3 years ago
8 0

Answer:

Step-by-step explanation:

podryga [215]3 years ago
7 0

Answer:x=-2 or x=20

Step-by-step explanation:

X^2-18x-40=0

X^2+2x-20x-40=0

X(x+2)-20(x+2)=0

(X+2)(x-20)=0

X+2=0 or x-20=0

X=-2 or x=20

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Step-by-step explanation:

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The original price of a shirt is increased by $15. Patrick buys two of the shirts. The total price before sales tax is added is
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3 years ago
Read 2 more answers
If ab = c - d, which of the following is an expression for d in terms of a, b, and c?
horsena [70]
ANSWER

d =  - ab + c


EXPLANATION


The given expression is

ab = c - d

To find an expression for d in terms of a, b, and c, means we want to make d the subject of the relation.


This means that, we need to isolate d on one side of the equation while all other terms are on the other side.



We subtract from both sides of the equation to obtain,


ab - c = - d



We now divide through by -1, to get,



- ab  +  c = d


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d = - ab  +  c


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