Step-by-step explanation: Factor the expressionFactor the expressionSolution\(7y\cdot \left(3x^{3}+2x^{2}-1\right)\)Step \(21x^{3}y+14x^{2}y-7y\)\(\xpmhighlightbox{bgcolor=#D3E3FD, underlinecolor=#D3E3FD}{21x^{3}y+14x^{2}y-7y}\)Factor out \(7y\) from the expression\(\xpmhighlightbox{bgcolor=#D3E3FD, underlinecolor=#D3E3FD}{7y\cdot \left(3x^{3}+2x^{2}-1\right)}\)Solution\(7y\cdot \left(3x^{3}+2x^{2}-1\right)\)