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Thepotemich [5.8K]
3 years ago
13

Evaluate the expression for the given value of the variables 5a+5b; a=-6, b=-5

Mathematics
2 answers:
choli [55]3 years ago
7 0

Answer:

-55.

Step-by-step explanation:

5a+ 5b when  a=-6 and  b=-5 :

= 5(-6) + 5(-5)

= -30 - 25

= -55.

Oksanka [162]3 years ago
3 0

Answer:

Answer is -55

All you have to do is write out the expression. Write it out again this time substitute the a for -6 and the b for -5. After that multiply both and you should have -30 + -25. Add the two negatives and you should have -55.

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Solution:

we have been asked to find the solution of the equation

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x^6 + 6x^3 + 5 = 0\\\\substitute, x^3=y\\\\y^2+6y+5=0\\\\y^2+5y+y+5=0\\\\y(y+5)+1(y+5)=0\\\\(y+5)(y+1)=0\\\\y=-1,-5\\\\\text{substitute back }y=x^3\\\\x^3=-1,-5\\\\x=-1,\sqrt[3]{-5} \\\\\text{These are the only real solutions}\\

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The awnser would be 30.


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