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jeyben [28]
3 years ago
5

Ill mark as brainliest

Mathematics
1 answer:
crimeas [40]3 years ago
4 0

Answer: x =-7 and y =10

Step-by-step explanation:

The given system of equations :

4x-y=-38..................(1)\\x+y=3...........................(2)

Add equation (1) and (2), we get

4x+x-y+y=-38+3\\\\\Rightarrow5x=-35\\\\\Rightarrow\ x=\frac{-35}{5}=-7\\\\\Rightarrow\ x=-7

Put value of x in (2), we get

-7+y=3\\\\\Rightarrow\ y=3+7=10

hence, the solution of the given system is  x =-7 and y =10.

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Written as a simplified polynomial in standard form, what is the result when (3x+7)^2 is subtracted from 3?
nadezda [96]

Given:

(3x+7)^2 is subtracted from 3.

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The result of the given statement in the standard form of the polynomial.

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We need to find the result when (3x+7)^2 is subtracted from 3.

So, the resulted polynomial can be written as:

P(x)=3-(3x+7)^2

On simplification, we get

P(x)=3-((3x)^2+2(3x)(7)+(7)^2)               [\because (a+b)^2=a^2+2ab+b^2]

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Step-by-step explanation:

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