Question

Expand using identity: (-2x + 5y -3z)?​

Answer 1

Expand the square

(2+5)2+(2−5)2

(2+5)(2+5)+(2−5)2

2

Distribute

(2+5)(2+5)+(2−5)2

2(2+5)+5(2+5)+(2

Distribute

2(2+5)+5(2+5)+(2−5)2

42+10+5(2+5)+(2−5)2

42+20+252+(2−5)2

42+20+252+(2−5)(2−5

that is answerSolution

82+502