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3 years ago

Simplify the following expression. -7x² - 5x-6x² +4 + 15x

Mathematics

2 answers:

vfiekz [6]3 years ago

8 0

Answer: -13x^2 + 10x + 4

Step-by-step explanation:

group all of the same variables together to simplify the equation.

-7 - 6 = -13 // the x^2 value

-5 + 15 = 10 // the x value

4 is the only number without an exponent so leave it alone.

azamat3 years ago

8 0

Answer:

-13x²+10x+4

Step-by-step explanation:

You need to group all of the same variables together:

-7x² - 5x - 6x² + 4 + 15x

-7x²-6x²-5x+15x+4

-13x²+10x+4

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3 years ago

Read 2 more answers

Calculate the axis of symmetry in the equation Y = (x+1) (x-4)

algol [13]

Answer:

Every parabola has a turning point called the axis of symmetry,so for this question you just have to find the turning points

x turning point= -b/2a,and the y turning point is gotten by replacing the value of x in the equation

y=(x+1)(x-4)

=x^2-3x-4

a is 1,b is -3 and c is -4

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= -6.25

therefore the axis of symmetry is (1.5,-6.25)

I hope this helps

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Eva8 [605]

Answer:

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