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# Algebra

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What is the value of 1 - 2x + 3x^2 - 4x + 5x - 6x + 7x^2 - 8x + 9 in terms of x? Express your answer in the form ax^2 + bx + c where a, b, and c are numbers.

Dec 26, 2021

#1
+13724
+1

What is the value of 1 - 2x + 3x^2 - 4x + 5x - 6x + 7x^2 - 8x + 9 in terms of x? Express your answer in the form ax^2 + bx + c where a, b, and c are numbers.

Hello Guest!

$$f(x)=ax^2+bx+c$$

$$f(x)=10x^2-15x+10$$

$$a=10,\ b=-15,\ c=10$$

If   f (x) = 0,  then:

$$x^2-1.5x+1=0\\ x=0.75\pm \sqrt{0.5625-1}$$

$$x\in \{0.75-0.661438i,\ 0.75+0.661438i\}$$

!

Dec 27, 2021