3 years ago

Simplify the following. 1. a4 – 2a – 3a4 – 3a + 1

Mathematics

2 answers:

fredd [130]3 years ago

8 0

Answer:

-2a^4 - 5a +1

Step-by-step explanation:

I dunno if this is right but i got this.

boyakko [2]3 years ago

5 0

Answer:

− 2 a 4 − 5 a + 1

Step-by-step explanation:

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3 years ago

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2x squared + 9x=-5 i need to solve for x

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$2x^2+ 9x=-5 \\ \\2x^2 + 9x+5 =0 \\\\a=2, \ \ b=9 , \ \ c=5 \\\\\Delta =b^2-4ac = 9^2 -4\cdot 2\cdot 5 = 81-40=41 \\ \\x_{1}=\frac{-b-\sqrt{\Delta} }{2a}=\frac{-9-\sqrt{41}}{2\cdot 2 }=\frac{-9-\sqrt{41}}{ 4 }\\\\ x_{2}=\frac{-b+\sqrt{\Delta} }{2a}=\frac{-9+\sqrt{41}}{2\cdot 2 }=\frac{-9+\sqrt{41}}{4 }$