Question

(x+5)(x+4) using identities​

Answer 1

Answer:

The identity is (x+a)(x+b) = x²+(a+b)x + ab

Step-by-step explanation:

Using the above,

= x²+(4+5)x + (4x5)

= x²+9x+20

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Answer 2

Answer:

X2 + (5+4)x+5*4

here is your answer