Question Simplify the expression 3x4−15x2 Evaluate 3x4−(5x2×3)Solution 3x4−15x2 Show Solution Factor the expression 3x2(x2−5) Evaluate 3x4−(5x2×3)Multiply the terms 3x4−15x2Rewrite the expression 3x2×x2−3x2×5Solution 3x2(x2−5) Show Solution Find the roots x1=−5,x2=0,x3=5Alternative Form x1≈−2.236068,x2=0,x3≈2.236068 Evaluate (3x4)−(5x2×3)To find the roots of the expression,set the expression equal to 0 (3x4)−(5x2×3)=0Multiply the terms 3x4−(5x2×3)=0Multiply the terms 3x4−15x2=0Factor the expression 3x2(x2−5)=0Divide both sides x2(x2−5)=0Separate the equation into 2 possible cases x2=0x2−5=0The only way a power can be 0 is when the base equals 0 x=0x2−5=0Solve the equation More Steps Evaluate x2−5=0Move the constant to the right-hand side and change its sign x2=0+5Removing 0 doesn't change the value,so remove it from the expression x2=5Take the root of both sides of the equation and remember to use both positive and negative roots x=±5Separate the equation into 2 possible cases x=5x=−5 x=0x=5x=−5Solution x1=−5,x2=0,x3=5Alternative Form x1≈−2.236068,x2=0,x3≈2.236068 Show Solution