10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:
{y = -2 x - 2
{16 x + 6 = -2
in the second equation, look to solve for x:
{y = -2 x - 2
{16 x + 6 = -2
subtract 6 from both sides:
{y = -2 x - 2
{16 x = -8
divide both sides by 16:
{y = -2 x - 2
{x = -1/2
substitute x = -1/2 into the first equation:
{y = -1
{x = -1/2
collect results in alphabetical order:
answer: {x = -1/2 , y = -1
Answer from: Quest
the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:
option a. true
step-by-step explanation:
9x^2-12x+4
comparing with the form a^2-2ab+b^2
1.) a^2=9x^2
solving for a: square root both sides of the equation:
sqrt(a^2)=sqrt(9x^2)
a=sqrt(9) sqrt(x^2)
a=3x
2.) b^2=4
solving for b: square root both sides of the equation:
sqrt(b^2)=sqrt(4)
b=2
to be a perfet square trinomial 2ab must be equal to 12x. let's check:
2ab = 2 (3x) (2)
2ab = 12x
correct
Another question on Mathematics
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Revirite the formula to determine the area covered by one can of paint. alyssa and her father are going to paint the house this summer. they know they'll need 6 cans of paint. enter the correct answer. 000 done a formula that describes this scenario is (licierali 000 oo 6 w w = the total area of the walls p = area covered by a can of paint