Write the following by using ∑ notation(1) ab(a + b) + bc(b + c) + c

1.	Write the following by using ∑ notation(1) ab(a + b) + bc(b + c) + ca(c + a)(2) a2 + b2 + c2 − ab − bc − ca(3) x(y2 + z2) + y(z2 − x2) + z(x2 − y2)(4) ab2 − ac2 − a2b + bc2 − cb2 + ca2
Answer» Write the following by using ∑ notation (1) ab(a + b) + bc(b + c) + ca(c + a) (2) a² + b² + c² − ab − bc − ca (3) x(y² + z²) + y(z² − x²) + z(x² − y²) (4) ab² − ac² − a²b + bc² − cb² + ca²

Write the following by using ∑ notation(1) ab(a + b) + bc(b + c) + ca(c + a)(2) a2 + b2 + c2 − ab − bc − ca(3) x(y2 + z2) + y(z2 − x2) + z(x2 − y2)(4) ab2 − ac2 − a2b + bc2 − cb2 + ca2

Answer»

Write the following by using ∑ notation

(1) ab(a + b) + bc(b + c) + ca(c + a)

(2) a² + b² + c² − ab − bc − ca

(3) x(y² + z²) + y(z² − x²) + z(x² − y²)

(4) ab² − ac² − a²b + bc² − cb² + ca²

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Write the following by using ∑ notation(1) ab(a + b) + bc(b + c) + ca(c + a)(2) a2 + b2 + c2 − ab − bc − ca(3) x(y2 + z2) + y(z2 − x2) + z(x2 − y2)(4) ab2 − ac2 − a2b + bc2 − cb2 + ca2

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