Question

evaluate using identities (x²-9)(c²+9)
pls tell me fast​

Answer 1

Step-by-step explanation:

(x²-3²)(c²+3²)

$x {}^{2} - {y}^{2} = (x - y)(x + y) \\ \\ {x}^{2} + {y}^{2} = (x + y)( {x}^{2} - xy + {y}^{2} )$

so, (x-3)(x+3)(c+a)(c²-3c+9)