3 + 4x to the second power when x = 5

Mathematics

2 answers:

nadya68 [22]3 years ago

7 0

Answer: If x=5 and it’s asking 3+4(5)^2

5^2=25 and 4(25)=100 and then 3+100=103

Step-by-step explanation:

aleksklad [387]3 years ago

5 0

Answer:

529, because 4×5=20. 20+3=23. 23 to the second power would be 529.

Have a good day~

Sorry If it's incorrect or wrong.~

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Then shorten the fractions.

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We should get like this. Because the polynomial is 2-degree, I'd suggest you to move all terms to one place. Therefore, moving 2x+2 to another side and subtract.

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We are almost there. All we have to do is, solving for x by factoring. (Although there are more than just factoring but factoring this polynomial is faster.)

$(x-3)(x+2)=0\\x=3,-2$