Я тоже не понимаю англиский я шарю только матем и д/ш

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10. При якому значенні вираз (x-3 )( 2x +7) + m тотожно дорівнює виразу x²( 2x + 1) - 2 ( x³ - 1 ) + X(x+1) ?

Ihave many favorite hobbies. i love to read, i love to ride a bike, and i really like the story. but my most important hobby - it's drawing.       i started drawing when i was a kid. mom and dad often gave me the pens in different colors, crayons and beautiful, snow-white drawing paper. i liked to portray on a sheet of something beautiful, plants, animals, and sometimes humans. so i often do myself cards for mom and dad.       however, my first drawings were not the best. something crooked, something that did not work. but i always continued to paint. now, it seems to me, i paint very well. my works are hanging on the walls in my room. i often send their works to the contest of children's drawings, and often receive diplomas and prizes.       moreover, i go to art school. i really like it there. in art school reigns a real atmosphere of creativity and skill. we usually draw a still life, sometimes people. in the summer we go on plein-air and paint nature, flowers, forests, trees, houses.       now my drawings quite good. but someday i want to learn to paint like the great russian artists i.shishkin, ivan aivazovsky and k.bryullov! i'm sure i can draw even better if i try.