Question

Write in standard form and in factored form

Answer 1

Explanation:

( a ± b )² = a² ± 2ab + b²

a² - b² = ( a - b )( a + b )

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y = ( x + 3 )² - 25

(a). y = ( x² + 6x + 9 ) - 25

y = x² + 6x - 16

(b). y = ( x + 3 )² - 25

y = ( x + 3 )² - 5²

y = [ ( x + 3 ) - 5 ] [ ( x + 3 ) + 5 ]

y = ( x - 2 )( x + 8 )