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scZoUnD [109]
2 years ago
15

Given constants a and b such that x2 + ax + b has factors (x + 7) and (x + 2) what is a?​

Mathematics
1 answer:
dezoksy [38]2 years ago
8 0

Answer:

a=9 , b=14

Step-by-step explanation:

Just do the operation (x+7)(x+2)

x(x)+x(2)+7(x)+7(2)

x^2+2x+7x+14

x^2+9x+14

So a=9 and b=14

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2 years ago
Solve the system of equations using the elimination method. 1.Solve {x + 3y = -15
shutvik [7]

An equation is formed of two equal expressions. The solution is (-9,-2).

<h3>What is an equation?</h3>

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given the equation x + 3y = -15 and -3x + 2y = 23,

Step 1- Multiply the equations to make the coefficients match in either the x- or y-variable.

x + 3y = -15

3x + 9y = -45

Step2- After you multiply, add or subtract the two equations.

3x + 9y -3x + 2y = -45 + 23

Step 3- Then solve for the variables that is left.

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y = -2

Step4- Substitute the value of y in any one of equations to solve for x.

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x - 6 = -15

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Hence, The solution is (-9,-2).

Learn more about Equation:

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5 0
2 years ago
Whrite 2 diffrent pairs of decimals whose sums are 14.1 .One pair sould involve regrouping
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7.1 + 7= 14.1
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5 0
3 years ago
 HELPPPPP!!!!
dsp73
I believe the answer is 13
3 0
3 years ago
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A sport watch with an original price of $86 is on sale for $60.20. What is the percent of discount?
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3 years ago
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