3 x [ 2( x + 5) - 7 x ]
2006-10-10 14:38:37 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
=3x[2x+10-7x]
=3x[10-5x]
=30x-15x^2
or
=15x[2-x]
2006-10-10 14:41:19 · answer #1 · answered by Anonymous · 1⤊ 0⤋
3 x [ 2( x + 5) - 7 x ]
3*(2x+10-7x)
3(10-5x)
30-15x
2006-10-10 21:42:39 · answer #2 · answered by yupchagee 7 · 0⤊ 0⤋
the solution is
3x(2x + 10 - 7x)
3x(10 - 5x)
30x - 15x^2
15x( 2 - x)
2006-10-10 21:43:53 · answer #3 · answered by aazib_1 3 · 0⤊ 0⤋
3x [2 (x + 5) - 7x]
3x [2x + 10 - 7x]
3x [10 - 5x]
30x - 15x^2
-15x^2 + 30x
2006-10-10 22:17:00 · answer #4 · answered by lovinthemonster92 1 · 0⤊ 0⤋
3 x [2x + 10 -7x]
3 x [-5x + 10]
-15x +30
x - 2
x=2
2006-10-10 21:42:48 · answer #5 · answered by mystic_golfer 3 · 0⤊ 2⤋
3x[2(x+5)-7x]
= 3x[2x + 10 - 7x]
=3x[10-5x]
=30x-15x^2
=15x(2-x)
2006-10-10 21:42:43 · answer #6 · answered by jjodom1010 3 · 1⤊ 0⤋
263
2006-10-10 21:42:44 · answer #7 · answered by Paul Sabre 4 · 0⤊ 2⤋