Question

$(x + 3)(x - 5)$
pweasee in formula form fast​

Answer 1

Answer:

we know that

(x+a)(x+b) = x² + x(a+b) + ab

x² + x(3-5) + (3*-5)

x² -2x-15

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Answer 2

ANSWER : x²-2x - 15

LET'S SOLVE IT :

(x+3)(x-5)

= {(x+5)-2}(x-5)

= { (x+5)(x-5) } - 2(x-5)

= x²-5²-2x+10

= x² -2x +10 -25

= x² -2x - 15 .

ANOTHER METHOD (EASY ONE) :

(x+3)(x-5)

= x(x-5) + 3(x-5)

= x²-5x + 3x - 15

= x²-2x - 15

HOPE THIS WILL HELP YOU

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