Find the value of 2x - -15yz - 3xz-

On multiplying x with x, its power is raised to 2 i.e., nbsp; x × x = nbsp;x^2 On multiplying z with z its power is also raised to 2 . i.e., z × z = z^2 Mu ...

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Standard VIII

Mathematics

Multiplication of Monomials

Find the valu...

Question

Find the value of $2 x \times (- 15 y z) \times 3 x z$ .

90 x y z

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- 90 x^{2} y z^{2}

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- 10 x^{2} y z^{2}

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- 10 x y z

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Solution

The correct option is B $- 90 x^{2} y z^{2}$
On multiplying $x$ with $x$ , its power is raised to 2 i.e., $x \times x = x^{2}$
On multiplying $z$ with $z$ its power is also raised to 2 .
i.e.,
$z \times z = z^{2}$
Multiply all the coefficients to get $2 \times (- 15) \times 3 = - 90$
So, $2 x \times (- 15 y z) \times 3 x z$ = $- 90 x^{2} y z^{2}$

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Find the value of 2x×(−15yz)×3xz.

The correct option is B −90x2yz2On multiplying x with x, its power is raised to 2 i.e., x×x=x2 On multiplying z with z its power is also raised to 2 . i.e., z×z=z2 Multiply all the coefficients to get 2×(−15)×3=−90 So, 2x×(−15yz)×3xz = −90x2yz2

Find the value of $2 x \times (- 15 y z) \times 3 x z$ .