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(m 2 - n 2 m) 2 + 2m 3 n 2 = (m 2 ) 2 - 2(m 2 )(n 2 m) +(n 2 m) 2 + 2m 3 n 2 = m 4 - 2m 3 n 2 + n 4 m 2 + 2m 3 n 2 = m 4 + m 2 n 4

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Algebraic Expressions and Identities

Short Answer Type

121.

Simplify:

(ab + bc)² - 2ab²c

486 Views

122.
Simplify:

(m² - n²m)² + 2m³n²

(m² - n²m)² + 2m³n² = (m²)² - 2(m²)(n²m) +(n²m)²+ 2m³n²
= m⁴- 2m³n² + n⁴m²+ 2m³n²
= m⁴+ m²n⁴

229 Views

123.

Show that

(3x + 7)²-84x = (3x -7)²

354 Views

124.

Show that

(9p - 5 q)²+ 180pq = (9p + 5q)²

422 Views

125.

Show that

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