Math, asked by sscorpabd, 5 months ago

expand (5x-7) (5x-9) step by step plz

Answers

Answered by Thenavi

1

Answer:

25x^2-80x+63

Step-by-step explanation:

(5x-7)(5x-9)

(x+a)(x+b)=x^2+(a+b)x+ab

(5x-7)(5x-9)=(5x)^2+(-7+ -9)(5x)+(-7× -9)

=25x^2-80x+63

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