algebraic expressions need answers urgent 35-38
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For question no. 35 answer is (A)
Just use the identity
a³-b³ = (a-b)(a²+b²+ab)
(2x)³-(3y)³ = (2x-3y)(4x²+9y²-6xy)
For question no.38 correct answer is (c)
using ,
(a+b)² = a²+b²+2ab
a²+b² = (a+b)²-2ab
using this
(x²)² + (2)²
(x²+2)² - 4x²
(x²+2)² - (2x)²
(x²+2x+2)(x²-2x+2)
Just use the identity
a³-b³ = (a-b)(a²+b²+ab)
(2x)³-(3y)³ = (2x-3y)(4x²+9y²-6xy)
For question no.38 correct answer is (c)
using ,
(a+b)² = a²+b²+2ab
a²+b² = (a+b)²-2ab
using this
(x²)² + (2)²
(x²+2)² - 4x²
(x²+2)² - (2x)²
(x²+2x+2)(x²-2x+2)
Answered by
0
For question no. 35 answer is (A)
Just use the identity
a³-b³ = (a-b)(a²+b²+ab)
(2x)³-(3y)³ = (2x-3y)(4x²+9y²-6xy)
For question no.38 correct answer is (c)
using ,
(a+b)² = a²+b²+2ab
a²+b² = (a+b)²-2ab
using this
(x²)² + (2)²
(x²+2)² - 4x²
(x²+2)² - (2x)²
(x²+2x+2)(x²-2x+2)
Just use the identity
a³-b³ = (a-b)(a²+b²+ab)
(2x)³-(3y)³ = (2x-3y)(4x²+9y²-6xy)
For question no.38 correct answer is (c)
using ,
(a+b)² = a²+b²+2ab
a²+b² = (a+b)²-2ab
using this
(x²)² + (2)²
(x²+2)² - 4x²
(x²+2)² - (2x)²
(x²+2x+2)(x²-2x+2)
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