Question

Jabarkanlah
1.(5+a) (7+a)
2.(2x-3) (x+5)

Tolong dengan cara nya gan

Answer 1

Verified answer

(5+a) ( 7+a ) = ( 5x7) + ( 5xa) + (7xa) + (axa)

= 35 + 5a + 7a + a^2

= a^2 + 12a + 35


(2x-3) (x+5) = (2x X x ) + ( -3 X x ) + ( 2x X 5 ) + ( -3 x 5 )

= 2x^2 -3x+10x-15
= 2x^2+7x-15

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