4 years ago

(x^2+3y-3) - (-2x^2+3y-1)

1 answer:

5 0

$(x^2+3y-3) - (-2x^2+3y-1)$
Apply plus/minus rule.
-(-a)=a amd -(a)=-a
$(x^2+3y-3) - (-2x^2+3y-1)=x^2+3y-3+2x^2-3y+1
$
$=x^2+3y-3+2x^2-3y+1 \\
Add \ like \ terms \\
=3x^2 - 2 \\$
$Answer: \ 3x^2-2$

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umka2103 [35]

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5 0

4 years ago

Read 2 more answers

D=h+9 The variable H represents the number of hours worked, and the variable d represents the amount of dough prepared how many

Marta_Voda [28]

Answer:

12 hours

Step-by-step explanation:

If we assume that the units of D are kg, then we can put the given number into the equation and solve.

21 = h +9

12 = h . . . . . subtract 9

Eli worked 12 hours to prepare 21 kg of dough.