Question
Simplify the expression
−4y4+6y−9
Evaluate
y2−4y4−(y−3)2
Expand the expression
y2−4y4−(y2−6y+9)
If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses
y2−4y4−y2+6y−9
The sum of two opposites equals 0
More Steps

Evaluate
y2−y2
Collect like terms
(1−1)y2
Add the coefficients
0×y2
Calculate
0
0−4y4+6y−9
Solution
−4y4+6y−9
Show Solution

Find the roots
y∈/R
Evaluate
y2−4y4−(y−3)2
To find the roots of the expression,set the expression equal to 0
y2−4y4−(y−3)2=0
Calculate
More Steps

Evaluate
y2−4y4−(y−3)2
Expand the expression
y2−4y4−y2+6y−9
The sum of two opposites equals 0
More Steps

Evaluate
y2−y2
Collect like terms
(1−1)y2
Add the coefficients
0×y2
Calculate
0
0−4y4+6y−9
Remove 0
−4y4+6y−9
−4y4+6y−9=0
Solution
y∈/R
Show Solution
