Expand using suitable identity:(5x+9) (5x -7)
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Answer:
25x^2+10x-63
Step-by-step explanation:
(a+b)*(a+c)=a^2+a(b+c)+bc
(5x+9)*(5x-7)=25x^2+5x(9+-7)+9*-7
=25xsquare+10x-63
25x^2+10x-63
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