Question

(1) (5 x-7) (5 x-9) ??​

Answer 1

$1)(5 \times - 7)(5 \times - 9) \\ \rightarrow (- 35) \times ( - 45) \\ \rightarrow - 4575$

Answer 2

Answer:

= 25xsq - 80x + 63

Step-by-step explanation:

= (5x-7) + 5x(-9) -7(5x) -7(-9). { used foil method }

= 25xsq - 45x - 35xb+ 63. { multipled through}

= 25xsq - 80x + 63. { combined like terms}