Expand the following (-5x+2y+z)^2
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Answer:
= 25x² + 4y² + z² - 20xy +4yz - 10xz
Step-by-step explanation:
= (-5x+2y+z)^2
From ,
(a + b + c)2 = a2 + b2 + c2 +2ab+2bc +2ca
= (-5x)² + (2y)² + (z)² +2×(-5x) × 2y+2× 2y× z +2×z×(-5x)
= 25x² + 4y² + z² - 20xy +4yz - 10xz
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