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How do you solve 4x2 minus 30x plus 45 by factoring?

Updated: 12/21/2022

Wiki User

∙ 14y ago

Best Answer

The discriminant for the quadratic is b2-4ac = 302 - 4*4*45 = 900 - 720 = 180

Since 180 is not a perfect square, the roots of the equation are irrational and it is far from straightforward to solve such an equation by factoring.

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How do you factor 30x squared minus 26x plus 4?

2(5x - 1)(3x - 2)

How do you factor 15x squared minus 30x minus 720?

15x2 - 30x -720 = 15(x - 8)(x + 6).

How do you solve for x its -30x equals 6.3?

-30x=6.3 x=-.21

What is 100 plus 30x plus 30x equals 180?

x = 0.666666666666667 so 100 + (30x0.67) + (30x0.67) = around 180

State the degree of the polynomial equation x to the 5th power plus 7x cubed minus 30x equals 0?

For the equation: x5+7x3-30x=0 The highest exponent in the entire equation is 5 (from x5), so the equation is of degree 5.

Related questions

How do you factor 30x squared minus 26x plus 4?

2(5x - 1)(3x - 2)

How do you factor 15x squared minus 30x minus 720?

15x2 - 30x -720 = 15(x - 8)(x + 6).

How do you solve for x its -30x equals 6.3?

-30x=6.3 x=-.21

What is the answer to -30x equals 6.3?

Pressumably you want to solve for "x". Divide left and right by minus 30. That will leave the "x" alone on the left, and the answer on the right.

What is the expression of 9x to the secound power minus 30x plus 25?

That can be factored to (3x - 5)(3x - 5) or (3x - 5)2

What are the greatest common factors of 11-30x plus 24?

That's 35 - 30x. The GCF of 35 and 30x is 5.

What is 100 plus 30x plus 30x equals 180?

x = 0.666666666666667 so 100 + (30x0.67) + (30x0.67) = around 180

State the degree of the polynomial equation x to the 5th power plus 7x cubed minus 30x equals 0?

For the equation: x5+7x3-30x=0 The highest exponent in the entire equation is 5 (from x5), so the equation is of degree 5.

What represents the correct way to combine like terms in the expression 24 minus 13x plus 5 equals 30x plus 5 minus 3x?

24 - 13x + 5 = 30x + 5 - 3x is the same as 24 - 13x + 5 = 27x + 5 is the same as 29 -13x = 27x + 5 is the same as -13x -27x = 5 -29 is the same as -40x = -24 is the same as 40x = 24 is the same as 5x = 3

What is 30x plus x equals?

31x

How do you find the coefficient of x in an equation?

For example ?x+20=50x then solve: 50x-20=30x 30x/x=30 then the answer is 30 you just have to dived the answer by x

What is 3x plus 5 times 3x plus 5?

9x2 + 30x + 25

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