Question

z2 + 11z+ 18 Factorize the following by spliting the middle term
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Answer 1

Answer:

• z = -9 and -2.

Step-by-step explanation:

Given:

• Equation - z² + 11z + 18

To Find:

• Factorize the equation.

Now, will we factorize this equation by splitting middle term method.

⇒ z² + 11z + 18 = 0

⇒ z² + 9z + 2z + 18 = 0

⇒ z(z + 9) + 2(z + 9) = 0

⇒ (z + 9) (z + 2) = 0

⇒ (z + 9) = 0

⇒ z = - 9

⇒ (z + 2) = 0

⇒ z = -2

Answer 2

Answer:

Z²+2z+9z+18

z²+2z+9z+18

z(z+2)+9(z+9)

(z+2) (z+9)