use sutibale identities to find (3x+4) (3x-5),
Answers
Answered by
2
Answer:
9x²-3x -20
Step-by-step explanation:
(x+a)(x-b)= x²+(a-b)x-ab
(3x+4)(3x-5)=3x²+(4-5)3x-4(5)
=9x²-3x -20
Answered by
0
Answer:
9x²-3x -20
Step-by-step explanation:
WE KNOW THAT:
(x+a)(x-b)= x²+(a-b)x-ab
GIVEN
X=3X;A=4;B=-5
SUBSTITUE THE VALUES
(3x+4)(3x-5)=3x²+(4-5)3x-4(5)
=9x²-3x -20
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